{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,27]],"date-time":"2026-05-27T11:38:20Z","timestamp":1779881900822,"version":"3.53.1"},"reference-count":40,"publisher":"Springer Science and Business Media LLC","issue":"9","license":[{"start":{"date-parts":[[2019,5,8]],"date-time":"2019-05-08T00:00:00Z","timestamp":1557273600000},"content-version":"tdm","delay-in-days":0,"URL":"http:\/\/www.springer.com\/tdm"}],"funder":[{"DOI":"10.13039\/501100001659","name":"Deutsche Forschungsgemeinschaft","doi-asserted-by":"crossref","award":["HI 1108\/5-1"],"award-info":[{"award-number":["HI 1108\/5-1"]}],"id":[{"id":"10.13039\/501100001659","id-type":"DOI","asserted-by":"crossref"}]}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Qual Life Res"],"published-print":{"date-parts":[[2019,9]]},"DOI":"10.1007\/s11136-019-02195-9","type":"journal-article","created":{"date-parts":[[2019,5,8]],"date-time":"2019-05-08T10:02:54Z","timestamp":1557309774000},"page":"2609-2620","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":12,"title":["Response shift effects in patients\u2019 assessments of their quality of life after cardiac rehabilitation"],"prefix":"10.1007","volume":"28","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0528-1564","authenticated-orcid":false,"given":"Michael","family":"Friedrich","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6271-5269","authenticated-orcid":false,"given":"Jan","family":"Karoff","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6986-8145","authenticated-orcid":false,"given":"Andreas","family":"Hinz","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2019,5,8]]},"reference":[{"issue":"22","key":"2195_CR1","doi-asserted-by":"publisher","first-page":"2233","DOI":"10.1161\/CIR.0b013e3182949a2e","volume":"127","author":"JS Rumsfeld","year":"2013","unstructured":"Rumsfeld, J. S., Alexander, K. P., Goff, D. C., Graham, M. M., Ho, P. M., Masoudi, F. A., et al. (2013). Cardiovascular health: The importance of measuring patient-reported health status. A scientific statement from the American Heart Association. Circulation, 127(22), 2233\u20132249. https:\/\/doi.org\/10.1161\/cir.0b013e3182949a2e .","journal-title":"Circulation"},{"issue":"11","key":"2195_CR2","doi-asserted-by":"publisher","first-page":"2378","DOI":"10.2337\/dc10-0979","volume":"33","author":"GWD Landman","year":"2010","unstructured":"Landman, G. W. D., van Hateren, K. J. J., Kleefstra, N., Groenier, K. H., Gans, R. O. B., & Bilo, H. J. G. (2010). Health-related quality of life and mortality in a general and elderly population of patients with type 2 diabetes (ZODIAC-18). Diabetes Care, 33(11), 2378\u20132382. https:\/\/doi.org\/10.2337\/dc10-0979 .","journal-title":"Diabetes Care"},{"issue":"1","key":"2195_CR3","doi-asserted-by":"publisher","first-page":"71","DOI":"10.1136\/heart.88.1.71","volume":"88","author":"DA Lane","year":"2002","unstructured":"Lane, D. A., Lip, G. Y. H., & Millane, T. A. (2002). Quality of life in adults with congenital heart disease. Congenital Heart Disease, 88(1), 71. https:\/\/doi.org\/10.1136\/heart.88.1.71 .","journal-title":"Congenital Heart Disease"},{"issue":"3","key":"2195_CR4","doi-asserted-by":"publisher","first-page":"235","DOI":"10.1136\/heart.87.3.235","volume":"87","author":"J Juenger","year":"2002","unstructured":"Juenger, J., Schellberg, D., Kraemer, S., Haustetter, A., Zugck, C., Herzog, W., et al. (2002). Health related quality of life in patients with congestive heart failure: Comparison with other chronic diseases and relation to functional variables. Cardiovascular Medicine, 87(3), 235\u2013241. https:\/\/doi.org\/10.1136\/heart.87.3.235 .","journal-title":"Cardiovascular Medicine"},{"issue":"4","key":"2195_CR5","doi-asserted-by":"publisher","first-page":"436","DOI":"10.1093\/eurheartj\/ehn509","volume":"30","author":"B Schweikert","year":"2009","unstructured":"Schweikert, B., Hunger, M., Meisinger, C., K\u00f6nig, H.-H., Gapp, O., & Holle, R. (2009). Quality of life several years after myocardial infarction: Comparing the MONICA\/KORA registry to the general population. European Heart Journal, 30(4), 436\u2013443. https:\/\/doi.org\/10.1093\/eurheartj\/ehn509 .","journal-title":"European Heart Journal"},{"issue":"2","key":"2195_CR6","doi-asserted-by":"publisher","first-page":"117","DOI":"10.1177\/1474515113519930","volume":"14","author":"D de Smedt","year":"2015","unstructured":"de Smedt, D., Clays, E., Annemans, L., Pardaens, S., Kotseva, K., & de Bacquer, D. (2015). Self-reported health status in coronary heart disease patients: A comparison with the general population. European Journal of Cardiovascular Nursing, 14(2), 117\u2013125. https:\/\/doi.org\/10.1177\/1474515113519930 .","journal-title":"European Journal of Cardiovascular Nursing"},{"issue":"Pt 2","key":"2195_CR7","doi-asserted-by":"publisher","first-page":"307","DOI":"10.1348\/135910709X464443","volume":"15","author":"M Dempster","year":"2010","unstructured":"Dempster, M., Carney, R., & McClements, R. (2010). Response shift in the assessment of quality of life among people attending cardiac rehabilitation. British Journal of Health Psychology, 15(Pt 2), 307\u2013319. https:\/\/doi.org\/10.1348\/135910709X464443 .","journal-title":"British Journal of Health Psychology"},{"key":"2195_CR8","unstructured":"Deutsche Rentenversicherung Bund. (2016). Reha-Therapiestandards Koronare Herzkrankheit f\u00fcr die medizinische Rehabilitation der Rentenversicherung."},{"issue":"1","key":"2195_CR9","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1177\/014662167900300101","volume":"3","author":"GS Howard","year":"1979","unstructured":"Howard, G. S., Ralph, K. M., Gulanick, N. A., Maxwell, S. E., Nance, D. W., & Gerber, S. K. (1979). Internal invalidity in pretest-posttest self-report evaluations and a re-evaluation of retrospective pretests. Applied Psychological Measurement, 3(1), 1\u201323. https:\/\/doi.org\/10.1177\/014662167900300101 .","journal-title":"Applied Psychological Measurement"},{"issue":"2","key":"2195_CR10","doi-asserted-by":"publisher","first-page":"144","DOI":"10.1037\/0021-9010.64.2.144","volume":"64","author":"GS Howard","year":"1979","unstructured":"Howard, G. S., & Dailey, P. R. (1979). Response-shift bias: A source of contamination of self-report measures. Journal of Applied Psychology, 64(2), 144\u2013150. https:\/\/doi.org\/10.1037\/0021-9010.64.2.144 .","journal-title":"Journal of Applied Psychology"},{"issue":"6","key":"2195_CR11","doi-asserted-by":"publisher","first-page":"709","DOI":"10.1080\/028418699432824","volume":"38","author":"MAG Sprangers","year":"1999","unstructured":"Sprangers, M. A. G., van Dam, F. S. A. M., Broersen, J., Lodder, L., Wever, L., Visser, M. R. M., et al. (1999). Revealing response shift in longitudinal research on fatigue: The use of the thentest approach. Acta Oncologica, 38(6), 709\u2013718. https:\/\/doi.org\/10.1080\/028418699432860 .","journal-title":"Acta Oncologica"},{"issue":"3","key":"2195_CR12","doi-asserted-by":"publisher","first-page":"335","DOI":"10.1007\/s11136-009-9450-x","volume":"18","author":"R Barclay-Goddard","year":"2009","unstructured":"Barclay-Goddard, R., Epstein, J. D., & Mayo, N. E. (2009). Response shift: A brief overview and proposed research priorities. Quality of Life Research, 18(3), 335\u2013346. https:\/\/doi.org\/10.1007\/s11136-009-9450-x .","journal-title":"Quality of Life Research"},{"issue":"3","key":"2195_CR13","doi-asserted-by":"publisher","first-page":"587","DOI":"10.1007\/s11136-004-0830-y","volume":"14","author":"FJ Oort","year":"2005","unstructured":"Oort, F. J. (2005). Using structural equation modeling to detect response shifts and true change. Quality of Life Research, 14(3), 587\u2013598. https:\/\/doi.org\/10.1007\/s11136-004-0830-y .","journal-title":"Quality of Life Research"},{"issue":"11","key":"2195_CR14","doi-asserted-by":"publisher","first-page":"1507","DOI":"10.1016\/S0277-9536(99)00045-3","volume":"48","author":"MAG Sprangers","year":"1999","unstructured":"Sprangers, M. A. G., & Schwartz, C. E. (1999). Integrating response shift into health-related quality of life research: A theoretical model. Social Science and Medicine, 48(11), 1507\u20131515. https:\/\/doi.org\/10.1016\/S0277-9536(99)00045-3 .","journal-title":"Social Science and Medicine"},{"issue":"4","key":"2195_CR15","doi-asserted-by":"publisher","first-page":"455","DOI":"10.1007\/s11136-010-9585-9","volume":"19","author":"CE Schwartz","year":"2010","unstructured":"Schwartz, C. E., & Sprangers, M. A. G. (2010). Guidelines for improving the stringency of response shift research using the thentest. Quality of Life Research, 19(4), 455\u2013464. https:\/\/doi.org\/10.1007\/s11136-010-9585-9 .","journal-title":"Quality of Life Research"},{"issue":"3","key":"2195_CR16","doi-asserted-by":"publisher","first-page":"629","DOI":"10.1007\/s11136-004-2577-x","volume":"14","author":"MRM Visser","year":"2005","unstructured":"Visser, M. R. M., Oort, F. J., & Sprangers, M. A. G. (2005). Methods to detect response shift in quality of life data: A convergent validity study. Quality of Life Research, 14(3), 629\u2013639. https:\/\/doi.org\/10.1007\/s11136-004-2577-x .","journal-title":"Quality of Life Research"},{"issue":"11","key":"2195_CR17","doi-asserted-by":"publisher","first-page":"1345","DOI":"10.1016\/S0959-8049(00)00447-0","volume":"37","author":"R Schwarz","year":"2001","unstructured":"Schwarz, R., & Hinz, A. (2001). Reference data for the quality of life questionnaire EORTC QLQ-C30 in the general German population. European Journal of Cancer, 37(11), 1345\u20131351. https:\/\/doi.org\/10.1016\/S0959-8049(00)00447-0 .","journal-title":"European Journal of Cancer"},{"issue":"7","key":"2195_CR18","doi-asserted-by":"publisher","first-page":"958","DOI":"10.3109\/0284186X.2013.879998","volume":"53","author":"A Hinz","year":"2014","unstructured":"Hinz, A., Singer, S., & Br\u00e4hler, E. (2014). European reference values for the quality of life questionnaire EORTC QLQ-C30: Results of a German investigation and a summarizing analysis of six European general population normative studies. Acta Oncologica, 53(7), 958\u2013965. https:\/\/doi.org\/10.3109\/0284186X.2013.879998 .","journal-title":"Acta Oncologica"},{"issue":"4","key":"2195_CR19","doi-asserted-by":"publisher","first-page":"477","DOI":"10.1080\/028418600750013384","volume":"39","author":"H Michelson","year":"2009","unstructured":"Michelson, H., & Bolund, C. (2009). Health-related quality of life measured by the EORTC QLQ-C30: Reference values from a large sample of the Swedish population. Acta Oncologica, 39(4), 477\u2013484. https:\/\/doi.org\/10.1080\/028418600750013384 .","journal-title":"Acta Oncologica"},{"issue":"1","key":"2195_CR20","doi-asserted-by":"publisher","first-page":"10","DOI":"10.3109\/0284186X.2011.614636","volume":"51","author":"M Derogar","year":"2012","unstructured":"Derogar, M., van der Schaaf, M., & Lagergren, P. (2012). Reference values for the EORTC QLQ-C30 quality of life questionnaire in a random sample of the Swedish population. Acta Oncologica, 51(1), 10\u201316. https:\/\/doi.org\/10.3109\/0284186X.2011.614636 .","journal-title":"Acta Oncologica"},{"key":"2195_CR21","doi-asserted-by":"publisher","DOI":"10.1136\/bmjopen-2012-001554","author":"T Dj\u00e4rv","year":"2012","unstructured":"Dj\u00e4rv, T., Wikman, A., & Lagergren, P. (2012). Number and burden of cardiovascular diseases in relation to health-related quality of life in a cross-sectional population-based cohort study. British Medical Journal Open. https:\/\/doi.org\/10.1136\/bmjopen-2012-001554 .","journal-title":"British Medical Journal Open"},{"issue":"9","key":"2195_CR22","doi-asserted-by":"publisher","first-page":"e74149","DOI":"10.1371\/journal.pone.0074149","volume":"8","author":"A Waldmann","year":"2013","unstructured":"Waldmann, A., Schubert, D., & Katalinic, A. (2013). Normative data of the EORTC QLQ-C30 for the German population: A population-based survey. PLoS ONE, 8(9), e74149. https:\/\/doi.org\/10.1371\/journal.pone.0074149 .","journal-title":"PLoS ONE"},{"issue":"6","key":"2195_CR23","doi-asserted-by":"publisher","first-page":"657","DOI":"10.1016\/j.jpainsymman.2007.01.011","volume":"34","author":"OMS Fredheim","year":"2007","unstructured":"Fredheim, O. M. S., Borchgrevink, P. C., Saltnes, T., & Kaasa, S. (2007). Validation and comparison of the health-related quality-of-life instruments EORTC QLQ-C30 and SF-36 in assessment of patients with chronic nonmalignant pain. Journal of Pain and Symptom Management, 34(6), 657\u2013665. https:\/\/doi.org\/10.1016\/j.jpainsymman.2007.01.011 .","journal-title":"Journal of Pain and Symptom Management"},{"key":"2195_CR24","unstructured":"Hasheesh, M. O. A., Almostafa, O. Y., & Ahmed, M. (2010). Health related quality of life among cardiac disease patients at Queen Alia Heart Institute. Jordan Medical Journal, 44."},{"issue":"85","key":"2195_CR25","doi-asserted-by":"publisher","first-page":"365","DOI":"10.1093\/jnci\/85.5.365","volume":"1993","author":"NK Aaronson","year":"1993","unstructured":"Aaronson, N. K., Ahmedzai, S., Bergman, B., Bullinger, M., Cull, A., Duez, N. J., et al. (1993). The European Organization for Research and Treatment of Cancer QLQ-C30: A quality-of-life instrument for use in international clinical trials in oncology. Journal of the National Cancer Institute, 1993(85), 365\u2013376.","journal-title":"Journal of the National Cancer Institute"},{"key":"2195_CR26","unstructured":"Fayers, P. M., Aaronson, N. K., Bjordal, K., Groenvold, M., Curran, D., & Bottomley, A on behalf of the EORTC Quality of Life Group. (2001). The EORTC QLQ-C30 Scoring Manual (3rd Edition). Brussels."},{"key":"2195_CR27","doi-asserted-by":"publisher","first-page":"79","DOI":"10.1016\/j.jclinepi.2015.08.007","volume":"69","author":"JM Giesinger","year":"2016","unstructured":"Giesinger, J. M., Kieffer, J. M., Fayers, P. M., Groenvold, M., Petersen, M. A., Scott, N. W., et al. (2016). Replication and validation of higher order models demonstrated that a summary score for the EORTC QLQ-C30 is robust. Journal of Clinical Epidemiology, 69, 79\u201388. https:\/\/doi.org\/10.1016\/j.jclinepi.2015.08.007 .","journal-title":"Journal of Clinical Epidemiology"},{"key":"2195_CR28","doi-asserted-by":"crossref","unstructured":"Dempster, A. P., Laird, N. M., & Rubin, D. B. (1977). Maximum likelihood from incomplete data via the EM algorithm. Journal of the Royal Statistical Society. Series B, (Statistical methodology), 39(1), 1\u201338.","DOI":"10.1111\/j.2517-6161.1977.tb01600.x"},{"key":"2195_CR29","unstructured":"Zaiontz, C. (2015). Real Statistics Using Excel."},{"key":"2195_CR30","volume-title":"Statistical power analysis for the behavioral sciences","author":"J Cohen","year":"1988","unstructured":"Cohen, J. (1988). Statistical power analysis for the behavioral sciences (2nd ed.). Hillsdale, NJ: L. Erlbaum Associates; Taylor and Francis.","edition":"2"},{"key":"2195_CR31","doi-asserted-by":"publisher","DOI":"10.1002\/9780470743386","volume-title":"Introduction to meta-analysis","author":"M Borenstein","year":"2009","unstructured":"Borenstein, M., Hedges, L. V., Higgins, J. P. T., & Rothenstein, H. R. (2009). Introduction to meta-analysis. New York, NY: John Wiley & Sons Ltd."},{"issue":"3","key":"2195_CR32","doi-asserted-by":"publisher","first-page":"599","DOI":"10.1007\/s11136-004-0831-x","volume":"14","author":"FJ Oort","year":"2005","unstructured":"Oort, F. J., Visser, M. R. M., & Sprangers, M. A. G. (2005). An application of structural equation modeling to detect response shifts and true change in quality of life data from cancer patients undergoing invasive surgery. Quality of Life Research, 14(3), 599\u2013609. https:\/\/doi.org\/10.1007\/s11136-004-0831-x .","journal-title":"Quality of Life Research"},{"issue":"7","key":"2195_CR33","doi-asserted-by":"publisher","first-page":"814","DOI":"10.3109\/0284186X.2015.1136749","volume":"55","author":"C Gerlich","year":"2016","unstructured":"Gerlich, C., Schuler, M., Jelitte, M., Neuderth, S., Flentje, M., Graefen, M., et al. (2016). Prostate cancer patients\u2019 quality of life assessments across the primary treatment trajectory: \u2018True\u2019 change or response shift? Acta Oncologica, 55(7), 814\u2013820. https:\/\/doi.org\/10.3109\/0284186X.2015.1136749 .","journal-title":"Acta Oncologica"},{"issue":"4","key":"2195_CR34","doi-asserted-by":"publisher","first-page":"561","DOI":"10.1080\/10705510903203433","volume":"16","author":"WE Saris","year":"2009","unstructured":"Saris, W. E., Satorra, A., & van der Veld, W. M. (2009). Testing structural equation models or detection of misspecifications? Structural Equation Modeling, 16(4), 561\u2013582. https:\/\/doi.org\/10.1080\/10705510903203433 .","journal-title":"Structural Equation Modeling"},{"issue":"11","key":"2195_CR35","doi-asserted-by":"publisher","first-page":"1713","DOI":"10.1016\/j.ejca.2012.02.059","volume":"48","author":"K Cocks","year":"2012","unstructured":"Cocks, K., King, M. T., Velikova, G., de Castro, G., Martyn St-James, M., Fayers, P. M., et al. (2012). Evidence-based guidelines for interpreting change scores for the European Organisation for the Research and Treatment of Cancer Quality of Life Questionnaire Core 30. European Journal of Cancer Care, 48(11), 1713\u20131721. https:\/\/doi.org\/10.1016\/j.ejca.2012.02.059 .","journal-title":"European Journal of Cancer Care"},{"issue":"1","key":"2195_CR36","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1080\/10705519909540118","volume":"6","author":"L-T Hu","year":"1999","unstructured":"Hu, L.-T., & Bentler, P. M. (1999). Cutoff criteria for fit indexes in covariance structure analysis: Conventional criteria versus new alternatives. Structural Equation Modeling, 6(1), 1\u201355. https:\/\/doi.org\/10.1080\/10705519909540118 .","journal-title":"Structural Equation Modeling"},{"issue":"3","key":"2195_CR37","doi-asserted-by":"publisher","first-page":"568","DOI":"10.1037\/0021-9010.93.3.568","volume":"93","author":"AW Meade","year":"2008","unstructured":"Meade, A. W., Johnson, E. C., & Braddy, P. W. (2008). Power and sensitivity of alternative fit indices in tests of measurement invariance. Journal of Applied Psychology, 93(3), 568\u2013592. https:\/\/doi.org\/10.1037\/0021-9010.93.3.568 .","journal-title":"Journal of Applied Psychology"},{"issue":"5","key":"2195_CR38","doi-asserted-by":"publisher","first-page":"420","DOI":"10.1177\/0193841X14546932","volume":"38","author":"V Piwowar","year":"2014","unstructured":"Piwowar, V., & Thiel, F. (2014). Evaluating response shift in training evaluation: Comparing the retrospective pretest with an adapted measurement invariance approach in a classroom management training program. Evaluation Review, 38(5), 420\u2013448. https:\/\/doi.org\/10.1177\/0193841X14546932 .","journal-title":"Evaluation Review"},{"issue":"1","key":"2195_CR39","doi-asserted-by":"publisher","first-page":"78","DOI":"10.5114\/kitp.2016.58974","volume":"13","author":"K Gierlaszy\u0144ska","year":"2016","unstructured":"Gierlaszy\u0144ska, K., Pudlo, R., Jaworska, I., Byrczek-Godula, K., & G\u0105sior, M. (2016). Tools for assessing quality of life in cardiology and cardiac surgery. Kardiochirurgia i torakochirurgia polska\u2009=\u2009Polish journal of cardio-thoracic surgery, 13(1), 78\u201382. https:\/\/doi.org\/10.5114\/kitp.2016.58974 .","journal-title":"Kardiochirurgia i torakochirurgia polska\u2009=\u2009Polish journal of cardio-thoracic surgery"},{"key":"2195_CR40","doi-asserted-by":"publisher","first-page":"87","DOI":"10.1007\/978-1-4757-3625-0_8","volume-title":"Statistical methods for quality of life studies: Design, measurements and analysis","author":"S Brian\u00e7on","year":"2002","unstructured":"Brian\u00e7on, S., Gergonne, B., Guillemin, F., Empereur, F., & Klein, S. (2002). Disease-specific versus generic measurement of health-related quality of life in cross-sectional and longitudinal studies: An inpatient investigation of the SF-36 and four disease-specific instruments. In M. Mesbah, B. F. Cole, & M.-L. T. Lee (Eds.), Statistical methods for quality of life studies: Design, measurements and analysis (pp. 87\u201399). Boston, MA: Springer."}],"container-title":["Quality of Life Research"],"original-title":[],"language":"en","link":[{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s11136-019-02195-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/article\/10.1007\/s11136-019-02195-9\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/link.springer.com\/content\/pdf\/10.1007\/s11136-019-02195-9.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2024,7,17]],"date-time":"2024-07-17T19:06:01Z","timestamp":1721243161000},"score":1,"resource":{"primary":{"URL":"http:\/\/link.springer.com\/10.1007\/s11136-019-02195-9"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,5,8]]},"references-count":40,"journal-issue":{"issue":"9","published-print":{"date-parts":[[2019,9]]}},"alternative-id":["2195"],"URL":"https:\/\/doi.org\/10.1007\/s11136-019-02195-9","relation":{},"ISSN":["0962-9343","1573-2649"],"issn-type":[{"value":"0962-9343","type":"print"},{"value":"1573-2649","type":"electronic"}],"subject":[],"published":{"date-parts":[[2019,5,8]]},"assertion":[{"value":"30 April 2019","order":1,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"8 May 2019","order":2,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"The authors declare that they have no conflicts of interest.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflicts interest"}},{"value":"The study received research ethics committee approval from ethic board of the medical faculty of the University of Leipzig (chairperson: Prof. Dr. R. Prei\u00df, protocol number: 287-13-07102013, date of approval: 15 Oct 2013).","order":3,"name":"Ethics","group":{"name":"EthicsHeading","label":"Ethical approval"}},{"value":"Informed consent was obtained from all participants individual included in the study.","order":4,"name":"Ethics","group":{"name":"EthicsHeading","label":"Informed consent"}},{"value":"All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and\/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study received research ethics committee approval from ethic board of the medical faculty of the University of Leipzig (chairperson: Prof. Dr. R. Prei\u00df, protocol number: 287-13-07102013, date of approval: 15 Oct 2013).","order":5,"name":"Ethics","group":{"name":"EthicsHeading","label":"Research involving human participants and\/or animals"}}]}}