{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,6]],"date-time":"2026-10-06T16:02:36Z","timestamp":1791302556291,"version":"4.1.0"},"reference-count":43,"publisher":"Springer Science and Business Media LLC","issue":"2","license":[{"start":{"date-parts":[[2020,8,18]],"date-time":"2020-08-18T00:00:00Z","timestamp":1597708800000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2020,8,18]],"date-time":"2020-08-18T00:00:00Z","timestamp":1597708800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"funder":[{"DOI":"10.13039\/100000009","name":"Foundation for the National Institutes of Health","doi-asserted-by":"publisher","award":["N01-AG-12100"],"award-info":[{"award-number":["N01-AG-12100"]}],"id":[{"id":"10.13039\/100000009","id-type":"DOI","asserted-by":"publisher"}]},{"name":"National Institute on Aging Intramural Research Program, the National Eye Institute USA","award":["ZIAEY000401"],"award-info":[{"award-number":["ZIAEY000401"]}]},{"name":"St.Josef\u00b4s Hospital Fund, Reykjavik"},{"name":"The Landspitali University Hospital Research Fund"},{"name":"The Icelandic Gerontological Society Research Fund"},{"name":"Helga Jonsdottir and Sigurlidi Kristjansson Geriatric Research Fund"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Osteoporos Int"],"published-print":{"date-parts":[[2021,2]]},"DOI":"10.1007\/s00198-020-05567-x","type":"journal-article","created":{"date-parts":[[2020,8,18]],"date-time":"2020-08-18T00:02:39Z","timestamp":1597708959000},"page":"243-250","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":8,"title":["Characteristics of incidence hip fracture cases in older adults participating in the longitudinal AGES-Reykjavik study"],"prefix":"10.1007","volume":"32","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0178-974X","authenticated-orcid":false,"given":"S. S.","family":"Skuladottir","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"A.","family":"Ramel","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"I.","family":"Hjaltadottir","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L. J.","family":"Launer","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"MF.","family":"Cotch","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"K.","family":"Siggeirsdottir","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"V.","family":"Gudnason","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"G.","family":"Sigurdsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"L.","family":"Steingrimsdottir","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"T.","family":"Halldorsson","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2020,8,18]]},"reference":[{"issue":"7","key":"5567_CR1","doi-asserted-by":"publisher","first-page":"1369","DOI":"10.1016\/j.injury.2016.04.018","volume":"47","author":"CM Peeters","year":"2016","unstructured":"Peeters CM, Visser E, Van de Ree CL et al (2016) Quality of life after hip fracture in the elderly: a systematic literature review. Injury 47(7):1369\u20131382","journal-title":"Injury"},{"issue":"8","key":"5567_CR2","doi-asserted-by":"publisher","first-page":"1295","DOI":"10.1007\/s00198-009-1162-0","volume":"21","author":"JC Davis","year":"2010","unstructured":"Davis JC, Robertson MC, Ashe MC et al (2010) International comparison of cost of falls in older adults living in the community: a systematic review. Osteoporos Int 21(8):1295\u20131306","journal-title":"Osteoporos Int"},{"key":"5567_CR3","doi-asserted-by":"publisher","first-page":"90","DOI":"10.1016\/j.bone.2016.06.006","volume":"90","author":"M Nasiri","year":"2016","unstructured":"Nasiri M, Luo Y (2016) Study of sex differences in the association between hip fracture risk and body parameters by DXA-based biomechanical modeling. Bone 90:90\u201398","journal-title":"Bone"},{"key":"5567_CR4","doi-asserted-by":"publisher","first-page":"131","DOI":"10.1016\/j.bone.2015.07.009","volume":"81","author":"K Briot","year":"2015","unstructured":"Briot K, Maravic M, Roux C (2015) Changes in number and incidence of hip fractures over 12 years in France. Bone 81:131\u2013137","journal-title":"Bone"},{"issue":"1","key":"5567_CR5","doi-asserted-by":"publisher","first-page":"167","DOI":"10.1007\/s00198-013-2513-4","volume":"25","author":"M Finsterwald","year":"2014","unstructured":"Finsterwald M, Sidelnikov E, Orav EJ et al (2014) Gender-specific hip fracture risk in community-dwelling and institutionalized seniors age 65 years and older. Osteoporos Int 25(1):167\u2013176","journal-title":"Osteoporos Int"},{"key":"5567_CR6","first-page":"2480693","volume":"2016","author":"Z Xiao","year":"2016","unstructured":"Xiao Z, Ren D, Feng W, Chen Y, Kan W, Xing D (2016) Height and risk of hip fracture: a meta-analysis of prospective cohort studies. Biomed Res Int 2016:2480693","journal-title":"Biomed Res Int"},{"key":"5567_CR7","doi-asserted-by":"crossref","unstructured":"Steingrimsdottir L, Halldorsson TI, Siggeirsdottir K et al (2014) Hip fractures and bone mineral density in the elderly - importance of serum 25-hydroxyvitamin D. PLoS One:9(3)","DOI":"10.1371\/journal.pone.0091122"},{"issue":"5","key":"5567_CR8","doi-asserted-by":"publisher","first-page":"583","DOI":"10.1016\/j.rbo.2016.02.003","volume":"51","author":"MTE Guerra","year":"2016","unstructured":"Guerra MTE, Feron ET, Viana RD et al (2016) Elderly with proximal hip fracture present significantly lower levels of 25-hydroxyvitamin D. Rev Bras Ortop (Engl Ed) 51(5):583\u2013588","journal-title":"Rev Bras Ortop (Engl Ed)"},{"issue":"1","key":"5567_CR9","first-page":"12","volume":"17","author":"MA Fiatarone Singh","year":"2014","unstructured":"Fiatarone Singh MA (2014) Exercise, nutrition and managing hip fracture in older persons. Curr Opin Clin Nutr Metab Care 17(1):12\u201324","journal-title":"Curr Opin Clin Nutr Metab Care"},{"issue":"3","key":"5567_CR10","doi-asserted-by":"publisher","first-page":"513","DOI":"10.1359\/jbmr.090807","volume":"25","author":"T Lang","year":"2010","unstructured":"Lang T, Cauley JA, Tylavsky F et al (2010) Computed tomographic measurements of thigh muscle cross-sectional area and attenuation coefficient predict hip fracture: the health, aging, and body composition study. J Bone Miner Res 25(3):513\u2013519","journal-title":"J Bone Miner Res"},{"key":"5567_CR11","doi-asserted-by":"publisher","first-page":"186","DOI":"10.1016\/j.bone.2018.01.014","volume":"108","author":"EA Marques","year":"2018","unstructured":"Marques EA, Elbejjani M, Gudnason V et al (2018) Cigarette smoking and hip volumetric bone mineral density and cortical volume loss in older adults: the AGES-Reykjavik study. Bone 108:186\u2013192","journal-title":"Bone"},{"issue":"1","key":"5567_CR12","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1007\/s00198-008-0643-x","volume":"20","author":"EJ Waugh","year":"2009","unstructured":"Waugh EJ, Lam MA, Hawker GA et al (2009) Risk factors for low bone mass in healthy 40-60 year old women: a systematic review of the literature. Osteoporos Int 20(1):1\u201321","journal-title":"Osteoporos Int"},{"issue":"2","key":"5567_CR13","doi-asserted-by":"publisher","first-page":"188","DOI":"10.1016\/j.injury.2010.08.022","volume":"42","author":"V Benetou","year":"2011","unstructured":"Benetou V, Orfanos P, Benetos IS et al (2011) Anthropometry, physical activity and hip fractures in the elderly. Injury 42(2):188\u2013193","journal-title":"Injury"},{"issue":"8","key":"5567_CR14","doi-asserted-by":"publisher","first-page":"1414","DOI":"10.1002\/jbmr.2469","volume":"30","author":"S Malkov","year":"2015","unstructured":"Malkov S, Cawthon PM, Peters KW et al (2015) Hip fractures risk in older men and women associated with DXA-derived measures of thigh subcutaneous fat thickness, cross-sectional muscle area, and muscle density. J Bone Miner Res 30(8):1414\u20131421","journal-title":"J Bone Miner Res"},{"issue":"Supplement C","key":"5567_CR15","doi-asserted-by":"publisher","first-page":"174","DOI":"10.1016\/j.archger.2016.10.008","volume":"68","author":"SH Chun","year":"2017","unstructured":"Chun SH, Cho B, Yang H-K et al (2017) Performance on physical function tests and the risk of fractures and admissions: findings from a national health screening of 557,648 community-dwelling older adults. Arch Gerontol Geriatr 68(Supplement C):174\u2013180","journal-title":"Arch Gerontol Geriatr"},{"issue":"7","key":"5567_CR16","doi-asserted-by":"publisher","first-page":"2231","DOI":"10.1007\/s00198-016-3514-x","volume":"27","author":"AW Frank-Wilson","year":"2016","unstructured":"Frank-Wilson AW, Farthing JP, Chilibeck PD et al (2016) Lower leg muscle density is independently associated with fall status in community-dwelling older adults. Osteoporos Int 27(7):2231\u20132240","journal-title":"Osteoporos Int"},{"key":"5567_CR17","doi-asserted-by":"publisher","first-page":"741918","DOI":"10.4061\/2011\/741918","volume":"2011","author":"R Marks","year":"2011","unstructured":"Marks R (2011) Physical activity and hip fracture disability: a review. J Aging Res 2011:741918","journal-title":"J Aging Res"},{"issue":"4","key":"5567_CR18","doi-asserted-by":"publisher","first-page":"1305","DOI":"10.1007\/s00198-013-2593-1","volume":"25","author":"H Lundin","year":"2014","unstructured":"Lundin H, Saaf M, Strender LE, Nyren S, Johansson SE, Salminen H (2014) One-leg standing time and hip-fracture prediction. Osteoporos Int 25(4):1305\u20131311","journal-title":"Osteoporos Int"},{"issue":"12","key":"5567_CR19","doi-asserted-by":"publisher","first-page":"2983","DOI":"10.1007\/s00198-013-2381-y","volume":"24","author":"T Pekkarinen","year":"2013","unstructured":"Pekkarinen T, L\u00f6yttyniemi E, V\u00e4lim\u00e4ki M (2013) Hip fracture prevention with a multifactorial educational program in elderly community-dwelling Finnish women. Osteoporos Int 24(12):2983\u20132992","journal-title":"Osteoporos Int"},{"key":"5567_CR20","doi-asserted-by":"publisher","first-page":"767","DOI":"10.1056\/NEJM199503233321202","volume":"332","author":"SR Cummings","year":"1995","unstructured":"Cummings SR, Nevitt MC, Browner WS et al (1995) Risk factors for hip fracture in white women. N Engl Med 332:767\u2013774","journal-title":"N Engl Med"},{"issue":"9","key":"5567_CR21","doi-asserted-by":"publisher","first-page":"1076","DOI":"10.1093\/aje\/kwk115","volume":"165","author":"TB Harris","year":"2007","unstructured":"Harris TB, Launer LJ, Eiriksdottir G et al (2007) Age, Gene\/Environment Susceptibility-Reykjavik Study: multidisciplinary applied phenomics. Am J Epidemiol 165(9):1076\u20131087","journal-title":"Am J Epidemiol"},{"key":"5567_CR22","unstructured":"WHO (2017) The International Classification of Diseases and Related Health Problems 10th Revision (ICD-10)-WHO"},{"issue":"9","key":"5567_CR23","doi-asserted-by":"publisher","first-page":"631","DOI":"10.1007\/s10654-007-9163-9","volume":"22","author":"K Siggeirsdottir","year":"2007","unstructured":"Siggeirsdottir K, Aspelund T, Sigurdsson G et al (2007) Inaccuracy in self-report of fractures may underestimate association with health outcomes when compared with medical record based fracture registry. Eur J Epidemiol 22(9):631\u2013639","journal-title":"Eur J Epidemiol"},{"key":"5567_CR24","doi-asserted-by":"publisher","first-page":"71","DOI":"10.3109\/00016488809106382","volume":"449","author":"H Aalto","year":"1988","unstructured":"Aalto H, Pyykko I, Starck J (1988) Computerized posturography, a development of the measuring system. Acta Otolaryngol Suppl 449:71\u201375","journal-title":"Acta Otolaryngol Suppl"},{"issue":"5","key":"5567_CR25","doi-asserted-by":"publisher","first-page":"614","DOI":"10.1093\/ageing\/afw090","volume":"45","author":"DM Mijnarends","year":"2016","unstructured":"Mijnarends DM, Koster A, Schols JM et al (2016) Physical activity and incidence of sarcopenia: the population-based AGES-Reykjavik Study. Age Ageing 45(5):614\u2013620","journal-title":"Age Ageing"},{"issue":"2","key":"5567_CR26","doi-asserted-by":"publisher","first-page":"142","DOI":"10.1111\/j.1532-5415.1991.tb01616.x","volume":"39","author":"D Podsiadlo","year":"1991","unstructured":"Podsiadlo D, Richardson S (1991) The timed \u201cup & go\u201d: a test of basic functional mobility for frail elderly persons. J Am Geriatr Soc 39(2):142\u2013148","journal-title":"J Am Geriatr Soc"},{"issue":"6","key":"5567_CR27","doi-asserted-by":"publisher","first-page":"609","DOI":"10.1191\/0269215502cr529oa","volume":"16","author":"K Siggeirsdottir","year":"2002","unstructured":"Siggeirsdottir K, Jonsson BY, Jonsson H Jr, Iwarsson S (2002) The timed \u2018up & go\u2019 is dependent on chair type. Clin Rehabil 16(6):609\u2013616","journal-title":"Clin Rehabil"},{"issue":"5-6","key":"5567_CR28","doi-asserted-by":"publisher","first-page":"243","DOI":"10.3233\/VES-120465","volume":"22","author":"J Rasku","year":"2012","unstructured":"Rasku J, Pyykko I, Juhola M et al (2012) Evaluation of the postural stability of elderly persons using time domain signal analysis. J Vestib Res 22(5-6):243\u2013252","journal-title":"J Vestib Res"},{"issue":"3","key":"5567_CR29","doi-asserted-by":"publisher","first-page":"644","DOI":"10.1016\/j.bone.2006.03.020","volume":"39","author":"G Sigurdsson","year":"2006","unstructured":"Sigurdsson G, Aspelund T, Chang M et al (2006) Increasing sex difference in bone strength in old age: the Age, Gene\/Environment Susceptibility-Reykjavik study (AGES-REYKJAVIK). Bone 39(3):644\u2013651","journal-title":"Bone"},{"issue":"5","key":"5567_CR30","doi-asserted-by":"publisher","first-page":"772","DOI":"10.1002\/bjs.6930","volume":"97","author":"JN Armitage","year":"2010","unstructured":"Armitage JN, van der Meulen JH (2010) Identifying comorbidity in surgical patients using administrative data with the Royal College of Surgeons Charlson Score. Br J Surg 97(5):772\u2013781","journal-title":"Br J Surg"},{"issue":"9","key":"5567_CR31","doi-asserted-by":"publisher","first-page":"e65","DOI":"10.1097\/MLR.0b013e318297429c","volume":"53","author":"SR Austin","year":"2015","unstructured":"Austin SR, Wong YN, Uzzo RG, Beck JR, Egleston BL (2015) Why summary comorbidity measures such as the Charlson comorbidity index and Elixhauser score work. Med Care 53(9):e65\u2013e72","journal-title":"Med Care"},{"issue":"2","key":"5567_CR32","doi-asserted-by":"publisher","first-page":"531","DOI":"10.1007\/s00198-014-2879-y","volume":"26","author":"X Zhang","year":"2015","unstructured":"Zhang X, Yu Z, Yu M, Qu X (2015) Alcohol consumption and hip fracture risk. Osteoporos Int 26(2):531\u2013542","journal-title":"Osteoporos Int"},{"issue":"9021","key":"5567_CR33","doi-asserted-by":"publisher","first-page":"145","DOI":"10.1016\/S0140-6736(96)01440-7","volume":"348","author":"P Dargent-Molina","year":"1996","unstructured":"Dargent-Molina P, Favier F, Grandjean H et al (1996) Fall-related factors and risk of hip fracture: the EPIDOS prospective study. Lancet 348(9021):145\u2013149","journal-title":"Lancet"},{"issue":"6","key":"5567_CR34","doi-asserted-by":"publisher","first-page":"956","DOI":"10.1002\/jor.1100130621","volume":"13","author":"SN Robinovitch","year":"1995","unstructured":"Robinovitch SN, McMahon TA, Hayes WC (1995) Force attenuation in trochanteric soft tissues during impact from a fall. J Orthop Res 13(6):956\u2013962","journal-title":"J Orthop Res"},{"issue":"1","key":"5567_CR35","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1016\/8756-3282(96)00102-0","volume":"19","author":"BJ Riis","year":"1996","unstructured":"Riis BJ, Hansen MA, Jensen AM et al (1996) Low bone mass and fast rate of bone loss at menopause: equal risk factors for future fracture: a 15-year follow-up Study. Bone 19(1):9\u201312","journal-title":"Bone"},{"issue":"4","key":"5567_CR36","doi-asserted-by":"publisher","first-page":"3406","DOI":"10.3390\/ijerph120403406","volume":"12","author":"MS Kami\u0144ska","year":"2015","unstructured":"Kami\u0144ska MS, Brodowski J, Karakiewicz B (2015) Fall risk factors in community-dwelling elderly depending on their physical function, cognitive status and symptoms of depression. Int J Environ Res Public Health 12(4):3406\u20133416","journal-title":"Int J Environ Res Public Health"},{"issue":"1","key":"5567_CR37","doi-asserted-by":"publisher","first-page":"9","DOI":"10.1177\/2150131916659282","volume":"8","author":"BM Kear","year":"2017","unstructured":"Kear BM, Guck TP, McGaha AL (2017) Timed up and go (TUG) test: normative reference values for ages 20 to 59 years and relationships with physical and mental health risk factors. J Prim Care Community Health 8(1):9\u201313","journal-title":"J Prim Care Community Health"},{"key":"5567_CR38","doi-asserted-by":"publisher","first-page":"4547","DOI":"10.2903\/j.efsa.2016.4547","volume":"14","author":"EFSA NDA Panel","year":"2016","unstructured":"EFSA NDA Panel (2016) Scientific opinion on dietary reference values for vitamin D. EFSA J 14:4547. https:\/\/doi.org\/10.2903\/j.efsa.2016.4547","journal-title":"EFSA J"},{"issue":"6","key":"5567_CR39","doi-asserted-by":"publisher","first-page":"1797","DOI":"10.1007\/s00198-014-2698-1","volume":"25","author":"K Zarca","year":"2014","unstructured":"Zarca K, Durand-Zaleski I, Roux C et al (2014) Cost-effectiveness analysis of hip fracture prevention with vitamin D supplementation: a Markov micro-simulation model applied to the French population over 65 years old without previous hip fracture. Osteoporos Int 25(6):1797\u20131806","journal-title":"Osteoporos Int"},{"issue":"2","key":"5567_CR40","doi-asserted-by":"publisher","first-page":"248","DOI":"10.1017\/S0007114515001397","volume":"114","author":"T Eysteinsdottir","year":"2015","unstructured":"Eysteinsdottir T, Halldorsson TI, Thorsdottir I (2015) Cod liver oil consumption at different periods of life and bone mineral density in old age. Br J Nutr 114(2):248\u2013256","journal-title":"Br J Nutr"},{"key":"5567_CR41","doi-asserted-by":"publisher","first-page":"1699","DOI":"10.1556\/650.2017.30892","volume":"43","author":"A Salamon","year":"2017","unstructured":"Salamon A, Toldy E, Biro C et al (2017) Vitamin D and calcium supplementation in elderly patients with hip fracture. Orv Hetil 43:1699\u20131707","journal-title":"Orv Hetil"},{"key":"5567_CR42","doi-asserted-by":"publisher","first-page":"555","DOI":"10.1007\/s00774-015-0696-9","volume":"34","author":"S-W Choi","year":"2015","unstructured":"Choi S-W, Kweon S-S, Choi J-S et al (2015) The association between vitamin D and parathyroid hormone and bone mineral density: the Dong-gu Study. J Bone Miner Metab 34:555\u2013563","journal-title":"J Bone Miner Metab"},{"key":"5567_CR43","doi-asserted-by":"crossref","unstructured":"Skuladottir SS, Gudmundsdottir E, Mogensen B, et al (2018) Hip fractures among older people in Iceland between 2008 and 2012. Int J Orthop Trauma Nurs","DOI":"10.1016\/j.ijotn.2018.06.001"}],"updated-by":[{"DOI":"10.1007\/s00198-020-05678-5","type":"correction","label":"Correction","source":"publisher","updated":{"date-parts":[[2020,10,21]],"date-time":"2020-10-21T00:00:00Z","timestamp":1603238400000}}],"container-title":["Osteoporosis International"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00198-020-05567-x.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/article\/10.1007\/s00198-020-05567-x\/fulltext.html","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/link.springer.com\/content\/pdf\/10.1007\/s00198-020-05567-x.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2021,8,17]],"date-time":"2021-08-17T23:27:04Z","timestamp":1629242824000},"score":1,"resource":{"primary":{"URL":"https:\/\/link.springer.com\/10.1007\/s00198-020-05567-x"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,8,18]]},"references-count":43,"journal-issue":{"issue":"2","published-print":{"date-parts":[[2021,2]]}},"alternative-id":["5567"],"URL":"https:\/\/doi.org\/10.1007\/s00198-020-05567-x","relation":{"correction":[{"id-type":"doi","id":"10.1007\/s00198-020-05678-5","asserted-by":"object"}]},"ISSN":["0937-941X","1433-2965"],"issn-type":[{"value":"0937-941X","type":"print"},{"value":"1433-2965","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,8,18]]},"assertion":[{"value":"6 February 2020","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"23 July 2020","order":2,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"18 August 2020","order":3,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"21 October 2020","order":4,"name":"change_date","label":"Change Date","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"Correction","order":5,"name":"change_type","label":"Change Type","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"The original version of this article, published on 18 august 2020 contained a mistake. An author\u2019s name was misspelled.","order":6,"name":"change_details","label":"Change Details","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"All participants provided written informed consent. The study was approved by the Icelandic National Bioethics Committee (VSN: 00-063) and the National Institute on Aging Intramural Institutional Review Board (MedStar IRB for the Intramural Research Program, Baltimore, MD).","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Compliance with ethical standards"}},{"value":"None.","order":2,"name":"Ethics","group":{"name":"EthicsHeading","label":"Conflicts of interest"}}]}}