{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,10]],"date-time":"2026-10-10T23:27:07Z","timestamp":1791674827545,"version":"4.3.4"},"reference-count":58,"publisher":"Springer Science and Business Media LLC","issue":"11","license":[{"start":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T00:00:00Z","timestamp":1502150400000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"},{"start":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T00:00:00Z","timestamp":1502150400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/www.springer.com\/tdm"}],"content-domain":{"domain":["link.springer.com"],"crossmark-restriction":false},"short-container-title":["Mol Psychiatry"],"published-print":{"date-parts":[[2017,11]]},"DOI":"10.1038\/mp.2017.148","type":"journal-article","created":{"date-parts":[[2017,8,8]],"date-time":"2017-08-08T08:01:40Z","timestamp":1502179300000},"page":"1539-1553","update-policy":"https:\/\/doi.org\/10.1007\/springer_crossmark_policy","source":"Crossref","is-referenced-by-count":71,"title":["The genealogy of major depression: symptoms and signs of melancholia from 1880 to 1900"],"prefix":"10.1038","volume":"22","author":[{"given":"K S","family":"Kendler","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"297","published-online":{"date-parts":[[2017,8,8]]},"reference":[{"key":"BFmp2017148_CR1","volume-title":"Psychiatrie: Ein Lehrbuch fur Studierende und Aerzte","author":"E Kraepelin","year":"1899","unstructured":"Kraepelin E . Psychiatrie: Ein Lehrbuch fur Studierende und Aerzte 2 vols., 6th edn. von Barth Verlag: Leipzig, 1899."},{"key":"BFmp2017148_CR2","doi-asserted-by":"publisher","first-page":"57","DOI":"10.1001\/archpsyc.1972.01750190059011","volume":"26","author":"JP Feighner","year":"1972","unstructured":"Feighner JP, Robins E, Guze SB, Woodruff RA Jr, Winokur G, Munoz R . Diagnostic criteria for use in psychiatric research. Arch Gen Psychiatry 1972; 26: 57\u201363.","journal-title":"Arch Gen Psychiatry"},{"key":"BFmp2017148_CR3","doi-asserted-by":"publisher","first-page":"1535","DOI":"10.1001\/jama.1957.02980140011003","volume":"164","author":"WL Cassidy","year":"1957","unstructured":"Cassidy WL, Flanagan NB, Spellman M, Cohen ME . Clinical observations in manic-depressive disease: a quantitative study of one hundred manic-depressive patients and fifty medically sick controls. JAMA 1957; 164: 1535\u20131546.","journal-title":"JAMA"},{"key":"BFmp2017148_CR4","doi-asserted-by":"publisher","first-page":"165","DOI":"10.1001\/jama.1950.02910210021006","volume":"142","author":"TT Stone","year":"1950","unstructured":"Stone TT, Burris BC . Melancholia; clinical study of 50 selected cases. JAMA 1950; 142: 165\u2013168.","journal-title":"JAMA"},{"key":"BFmp2017148_CR5","doi-asserted-by":"publisher","first-page":"134","DOI":"10.1176\/appi.ajp.2009.09081155","volume":"167","author":"KS Kendler","year":"2010","unstructured":"Kendler KS, Munoz RA, Murphy G . The development of the Feighner criteria: an historical perspective. Am J Psychiatry 2010; 167: 134\u2013142.","journal-title":"Am J Psychiatry"},{"key":"BFmp2017148_CR6","doi-asserted-by":"publisher","first-page":"771","DOI":"10.1176\/appi.ajp.2016.15121509","volume":"173","author":"KS Kendler","year":"2016","unstructured":"Kendler KS . The phenomenology of major depression and the representativeness and nature of DSM criteria. Am J Psychiatry 2016; 173: 771\u2013780.","journal-title":"Am J Psychiatry"},{"key":"BFmp2017148_CR7","doi-asserted-by":"publisher","first-page":"277","DOI":"10.1192\/bjp.80.329.277","volume":"80","author":"AJ Lewis","year":"1934","unstructured":"Lewis AJ . Melancholia: a clinical survey of depressive states. J Ment Sci 1934; 80: 277\u2013378.","journal-title":"J Ment Sci"},{"key":"BFmp2017148_CR8","volume-title":"Psychiatry: A Textbook for Students and Physicians (Translation of the 6th Edition of Psychiatrie-Translator Volume 1-Helga Metoui). Translator Volume 1-Helga Metoui; Translation of the 6th Edition of Psychiatrie ed","author":"E Kraepelin","year":"1990","unstructured":"Kraepelin E . Psychiatry: A Textbook for Students and Physicians (Translation of the 6th Edition of Psychiatrie-Translator Volume 1-Helga Metoui). Translator Volume 1-Helga Metoui; Translation of the 6th Edition of Psychiatrie ed. Science History Publications: Canton, MA, 1990."},{"key":"BFmp2017148_CR9","volume-title":"Psychiatry, A Textbook for Students and Physicians (Translation of the 6th Edition of Psychiatrie-Translator Volume 2-Sabine Ayed). Translator Volume 2-Sabine Ayed, Translation of the 6th Edition of Psychiatrie ed","author":"E Kraepelin","year":"1990","unstructured":"Kraepelin E . Psychiatry, A Textbook for Students and Physicians (Translation of the 6th Edition of Psychiatrie-Translator Volume 2-Sabine Ayed). Translator Volume 2-Sabine Ayed, Translation of the 6th Edition of Psychiatrie ed. Science History Publications: Canton, MA, 1990."},{"key":"BFmp2017148_CR10","doi-asserted-by":"publisher","first-page":"155","DOI":"10.1080\/10673220500174833","volume":"13","author":"K Trede","year":"2005","unstructured":"Trede K, Salvatore P, Baethge C, Gerhard A, Maggini C, Baldessarini RJ . Manic-depressive illness: evolution in Kraepelin's Textbook, 1883-1926. Harv Rev Psychiatry 2005; 13: 155\u2013178.","journal-title":"Harv Rev Psychiatry"},{"key":"BFmp2017148_CR11","volume-title":"Die Melancholie: Eine Klinische Studie","author":"Rv Krafft-Ebing","year":"1874","unstructured":"Krafft-Ebing Rv . Die Melancholie: Eine Klinische Studie. Verlag Von Ferdinand Enke: Erlangen, 1874."},{"key":"BFmp2017148_CR12","volume-title":"La M\u00e9lancolie","author":"J Roubinovitch","year":"1896","unstructured":"Roubinovitch J, Toulouse E . La M\u00e9lancolie first ednMasson Et Cie, \u00c9diteurs: Paris, 1896."},{"key":"BFmp2017148_CR13","first-page":"543","volume":"54","author":"T Ziehen","year":"1898","unstructured":"Ziehen T . The diagnosis and treatment of melancholia. Am J Insanity 1898; 54: 543\u2013587.","journal-title":"Am J Insanity"},{"key":"BFmp2017148_CR14","volume-title":"Trait\u00e9 De Pathologie Mentale","author":"G Ballet","year":"1903","unstructured":"Ballet G . Trait\u00e9 De Pathologie Mentale. Octave Doin, \u00c9diteur: Paris, 1903."},{"key":"BFmp2017148_CR15","first-page":"195","volume":"2","author":"I Russell","year":"1881","unstructured":"Russell I . Melancholia. Alien Neurol 1881; 2: 195\u2013207.","journal-title":"Alien Neurol"},{"key":"BFmp2017148_CR16","first-page":"560","volume":"19","author":"J Punton","year":"1898","unstructured":"Punton J . Incipient melancholia: its diagnosis, prognosis and treatment. Alien Neurol 1898; 19: 560\u2013572.","journal-title":"Alien Neurol"},{"key":"BFmp2017148_CR17","volume-title":"Compendium der Psychiatrie: Zum Gebrauche f\u00fcr Studirende und Aerzte","author":"E Kraepelin","year":"1883","unstructured":"Kraepelin E . Compendium der Psychiatrie: Zum Gebrauche f\u00fcr Studirende und Aerzte. Verlag von Ambr. Abel: Leipzig, 1883."},{"key":"BFmp2017148_CR18","volume-title":"Memoirs \/ Emil Kraepelin","author":"E Kraepelin","year":"1987","unstructured":"Kraepelin E . Memoirs \/ Emil Kraepelin. Springer-Verlag: Berlin, 1987."},{"key":"BFmp2017148_CR19","doi-asserted-by":"publisher","DOI":"10.2307\/j.ctt1xp3stn","volume-title":"Melancholia and Depression: From Hippocratic Times to Modern Times","author":"SW Jackson","year":"1986","unstructured":"Jackson SW . Melancholia and Depression: From Hippocratic Times to Modern Times. Yale University Press: New Haven, 1986."},{"key":"BFmp2017148_CR20","doi-asserted-by":"publisher","first-page":"173","DOI":"10.1002\/1520-6696(198304)19:2<173::AID-JHBS2300190206>3.0.CO;2-6","volume":"19","author":"SW Jackson","year":"1983","unstructured":"Jackson SW . Melancholia and partial insanity. J Hist Behav Sci 1983; 19: 173\u2013184.","journal-title":"J Hist Behav Sci"},{"key":"BFmp2017148_CR21","doi-asserted-by":"publisher","DOI":"10.1017\/CBO9780511526725","volume-title":"The History of Mental Symptoms: Descriptive psychopathology Since the Nineteenth Century","author":"GE Berrios","year":"1996","unstructured":"Berrios GE . The History of Mental Symptoms: Descriptive psychopathology Since the Nineteenth Century. Cambridge University Press: New York, NY, 1996."},{"key":"BFmp2017148_CR22","first-page":"43","volume-title":"Handbook of Affective Disorders","author":"GE Berrios","year":"1982","unstructured":"Berrios GE History of the affective disorders. In: Paykel ES (ed). Handbook of Affective Disorders. Churchill Livingstone: London, UK, 1982 pp 43\u201356."},{"key":"BFmp2017148_CR23","first-page":"13","volume-title":"Depression and Mania","author":"GE Berrios","year":"1988","unstructured":"Berrios GE Depressive and manic states during the nineteenth century. In: Georgotas A, Cancro R (ed). Depression and Mania. Elsevier: New York, NY, 1988 pp 13\u201325."},{"key":"BFmp2017148_CR24","volume-title":"The Nature of Melancholy: From Aristotle to Kristeva","author":"J Radden","year":"2000","unstructured":"Radden J . The Nature of Melancholy: From Aristotle to Kristeva. Oxford University Press: New York, NY, 2000."},{"key":"BFmp2017148_CR25","volume-title":"The Anatomy of Melancholia","author":"R Burton","year":"1893","unstructured":"Burton R . The Anatomy of Melancholia. Bell and Sons: London, UK, 1893."},{"key":"BFmp2017148_CR26","doi-asserted-by":"publisher","first-page":"1","DOI":"10.1177\/0957154X9100200501","volume":"2","author":"OM Marx","year":"1991","unstructured":"Marx OM . German romantic psychiatry. Part 2. Hist Psychiatry 1991; 2: 1\u201325.","journal-title":"Hist Psychiatry"},{"key":"BFmp2017148_CR27","volume-title":"A Treatise on Insanity and Other Disorders Affecting the Mind","author":"JC Prichard","year":"1837","unstructured":"Prichard JC . A Treatise on Insanity and Other Disorders Affecting the Mind. Haswell, Barrington, and Haswell: Philadelphia, 1837."},{"key":"BFmp2017148_CR28","doi-asserted-by":"publisher","DOI":"10.1037\/10552-000","volume-title":"A Manual of Psychological Medicine: The History, Nosology, Description, Statistics, Diagnosis, Pathology, and Treatment of Insanity","author":"JC Bucknill","year":"1858","unstructured":"Bucknill JC, Tuke DH . A Manual of Psychological Medicine: The History, Nosology, Description, Statistics, Diagnosis, Pathology, and Treatment of Insanity. Blanchard and Lea: Philadelphia, 1858."},{"key":"BFmp2017148_CR29","doi-asserted-by":"publisher","first-page":"13","DOI":"10.1177\/0957154X9400501702","volume":"5","author":"GE Berrios","year":"1994","unstructured":"Berrios GE, Beer D . The notion of a unitary psychosis: a conceptual history. Hist Psychiatry 1994; 5: 13\u201336.","journal-title":"Hist Psychiatry"},{"key":"BFmp2017148_CR30","volume-title":"Lectures on Mental Disease","author":"WHO Sankey","year":"1884","unstructured":"Sankey WHO . Lectures on Mental Disease second edn. H.K. Lewis: London, 1884."},{"key":"BFmp2017148_CR31","volume-title":"Handbuch Der Geisteskrankheiten","author":"H Sch\u00fcle","year":"1880","unstructured":"Sch\u00fcle H . Handbuch Der Geisteskrankheiten. Verlag Von F.C.W. Vogel: Leipzig, 1880."},{"key":"BFmp2017148_CR32","volume-title":"A Text-Book of Mental Diseases: With Special Reference to the Pathological Aspects of Insanity","author":"WB Lewis","year":"1889","unstructured":"Lewis WB . A Text-Book of Mental Diseases: With Special Reference to the Pathological Aspects of Insanity. Charles Griffin & Company: London, 1889."},{"key":"BFmp2017148_CR33","volume-title":"Lehrbuch der Irrenheilkunde: F\u00fcr Aerzte und Studirende","author":"F Scholz","year":"1892","unstructured":"Scholz F . Lehrbuch der Irrenheilkunde: F\u00fcr Aerzte und Studirende. Eduard Heinrich Mayer (Einhorn & J\u00e4ger): Leipzig, 1892."},{"key":"BFmp2017148_CR34","volume-title":"Handbook of Insanity for Practitioners and Students","author":"T Kirchhoff","year":"1893","unstructured":"Kirchhoff T . Handbook of Insanity for Practitioners and Students. William Wood & Company: New York, 1893."},{"key":"BFmp2017148_CR35","volume-title":"The Pathology of Mind: A Study of its Distempers, Deformities, and Disorders","author":"H Maudsley","year":"1895","unstructured":"Maudsley H . The Pathology of Mind: A Study of its Distempers, Deformities, and Disorders. Macmillan and Company: London, 1895."},{"key":"BFmp2017148_CR36","volume-title":"Lehrbuch Der Psychiatrie Auf Klinischer Grundlage Fur Praktische Arzte Und Studirende. Seventh Edition [The Last German Edition] ed","author":"Rv Krafft-Ebing","year":"1903","unstructured":"Krafft-Ebing Rv . Lehrbuch Der Psychiatrie Auf Klinischer Grundlage Fur Praktische Arzte Und Studirende. Seventh Edition [The Last German Edition] ed. F.A. Davis Company, Publishers: Philadelphia, PA, 1903."},{"key":"BFmp2017148_CR37","volume-title":"Text-Book of Insanity: Based on Clinical Observations (for Practitioners and Students of Medicine); Translator: Charles Gilbert Chaddock","author":"Rv Krafft-Ebing","year":"1903","unstructured":"Krafft-Ebing Rv . Text-Book of Insanity: Based on Clinical Observations (for Practitioners and Students of Medicine); Translator: Charles Gilbert Chaddock. F.A. Davis Company: Philadelphia, PA, 1903."},{"key":"BFmp2017148_CR38","volume-title":"Die Erkennung und Behandlung der Melancholie in der Praxis","author":"T Ziehen","year":"1907","unstructured":"Ziehen T . Die Erkennung und Behandlung der Melancholie in der Praxis. Halle a. S., Verlag von Carl Marhold: Berlin, 1907."},{"key":"BFmp2017148_CR39","doi-asserted-by":"publisher","first-page":"722","DOI":"10.1016\/S0140-6736(00)31761-5","volume":"146","author":"WF Farquharson","year":"1895","unstructured":"Farquharson WF . Melancholia, with special reference to its characteristics in Cumberland and West-Morland. Lancet 1895; 146: 722\u2013726.","journal-title":"Lancet"},{"key":"BFmp2017148_CR40","volume-title":"A Treatise on Insanity in its Medical Relations","author":"WA Hammond","year":"1883","unstructured":"Hammond WA . A Treatise on Insanity in its Medical Relations. D. Appleton and Company: New York, 1883."},{"key":"BFmp2017148_CR41","doi-asserted-by":"publisher","DOI":"10.1037\/12813-000","volume-title":"Insanity: Its Classification, Diagnosis and Treatment, A Manual for Students and Practitioners of Medicine","author":"EC Spitzka","year":"1883","unstructured":"Spitzka EC . Insanity: Its Classification, Diagnosis and Treatment, A Manual for Students and Practitioners of Medicine, First edn. Bermingham & Company: New York, NY, 1883."},{"key":"BFmp2017148_CR42","doi-asserted-by":"publisher","first-page":"558","DOI":"10.1192\/bjp.143.6.558","volume":"143","author":"JM Eagles","year":"1983","unstructured":"Eagles JM . Delusional depressive in-patients, 1892 to 1982. Br J Psychiatry 1983; 143: 558\u2013563.","journal-title":"Br J Psychiatry"},{"key":"BFmp2017148_CR43","volume-title":"Insanity and Allied Neuroses: Practical and Clinical","author":"GH Savage","year":"1884","unstructured":"Savage GH . Insanity and Allied Neuroses: Practical and Clinical. Henry C. Lea's Son & Company: Philadelphia, 1884."},{"key":"BFmp2017148_CR44","first-page":"199","volume-title":"Themes and Variations in European Psychiatry: An Anthology","author":"K Birnbaum","year":"1974","unstructured":"Birnbaum K The making of a psychosis: the principles of structural analysis in psychiatry. In: Hirsch SR, Shepherd M (eds). Themes and Variations in European Psychiatry: An Anthology. University Press of Virginia: Charlottesville, 1974 pp 199\u2013238."},{"key":"BFmp2017148_CR45","volume-title":"Mad Travelers: Reflections on the Reality of Transient Mental Illnesses","author":"I Hacking","year":"1998","unstructured":"Hacking I . Mad Travelers: Reflections on the Reality of Transient Mental Illnesses. University Press of Virginia: Charlottesville, VA, 1998."},{"key":"BFmp2017148_CR46","volume-title":"Depressive Disorders in Different Cultures: Report on the WHO Collaborative Study on Standardized Assessment of Depressive Disorders","author":"N Sartorius","year":"1983","unstructured":"Sartorius N, Davidian H, Ernberg G, Fenton FR, Fujii I, Gastpar M et al. Depressive Disorders in Different Cultures: Report on the WHO Collaborative Study on Standardized Assessment of Depressive Disorders. World Health Organization: Geneva, Switzerland, 1983."},{"key":"BFmp2017148_CR47","doi-asserted-by":"publisher","first-page":"1945","DOI":"10.1017\/S0033291714003067","volume":"45","author":"KS Kendler","year":"2015","unstructured":"Kendler KS, Aggen SH, Li Y, Lewis CM, Breen G, Boomsma DI et al. The similarity of the structure of DSM-IV criteria for major depression in depressed women from China, the United States and Europe. Psychol Med 2015; 45: 1945\u20131954.","journal-title":"Psychol Med"},{"key":"BFmp2017148_CR48","volume-title":"Insanity and its Treatment: Lectures on the Treatment of Insanity and Kindred Nervous Diseases","author":"S Worcester","year":"1882","unstructured":"Worcester S . Insanity and its Treatment: Lectures on the Treatment of Insanity and Kindred Nervous Diseases. Boericke & Tafel: New York, 1882."},{"key":"BFmp2017148_CR49","volume-title":"Mental Diseases","author":"CF Folsom","year":"1886","unstructured":"Folsom CF . Mental Diseases, Fifth volume. American System of Medicine: Boston, 1886."},{"key":"BFmp2017148_CR50","volume-title":"Compendium Der Psychiatrie F\u00fcr Praktische Aerzte Und Studierende","author":"J Salg\u00f3","year":"1889","unstructured":"Salg\u00f3 J . Compendium Der Psychiatrie F\u00fcr Praktische Aerzte Und Studierende. Verlag Von Bermann & Altmann (Alleiniger, Inhaber David Bermann): Wein, 1889."},{"key":"BFmp2017148_CR51","doi-asserted-by":"publisher","DOI":"10.1037\/12978-000","volume-title":"Sanity and Insanity","author":"C Mercier","year":"1890","unstructured":"Mercier C . Sanity and Insanity. Walter Scott: London, 1890."},{"key":"BFmp2017148_CR52","volume-title":"Notes on Mental Diseases: By a Student","author":"D Clark","year":"1892","unstructured":"Clark D . Notes on Mental Diseases: By a Student. Toronto University Medical College: Toronto, 1892."},{"key":"BFmp2017148_CR53","volume-title":"A Treatise on Nervous and Mental Diseases for Students and Practitioners of Medicine","author":"LC Gray","year":"1893","unstructured":"Gray LC . A Treatise on Nervous and Mental Diseases for Students and Practitioners of Medicine. Lea Brothers & Company: Philadelphia, 1893."},{"key":"BFmp2017148_CR54","volume-title":"A Primer of Psychology and Mental Disease","author":"CB Burr","year":"1894","unstructured":"Burr CB . A Primer of Psychology and Mental Disease. George S. Davis: Detroit, MI, 1894."},{"key":"BFmp2017148_CR55","volume-title":"Le\u00e7ons Cliniques Sur Les Maladies Mentales Et Nerveuses","author":"J S\u00e9glas","year":"1895","unstructured":"S\u00e9glas J . Le\u00e7ons Cliniques Sur Les Maladies Mentales Et Nerveuses. Asselin Et Houzeau: Libraires De La Facult\u00e9 De Medecine: Paris, 1895."},{"key":"BFmp2017148_CR56","volume-title":"A Text-Book on Mental Diseases for the use of Students and Practitioners of Medicine","author":"TH Kellogg","year":"1897","unstructured":"Kellogg TH . A Text-Book on Mental Diseases for the use of Students and Practitioners of Medicine. William Wood & Company: New York, NY, 1897."},{"key":"BFmp2017148_CR57","volume-title":"Nervous and Mental Diseases","author":"A Church","year":"1900","unstructured":"Church A, Peterson F . Nervous and Mental Diseases Second edn W.B.Saunders: Philadelphia, 1900."},{"key":"BFmp2017148_CR58","volume-title":"Nervous and Mental Diseases: A Manual for Students and Practitioners","author":"CS Potts","year":"1900","unstructured":"Potts CS . Nervous and Mental Diseases: A Manual for Students and Practitioners. Lea Brothers & Company: Philadelphia, 1900."}],"container-title":["Molecular Psychiatry"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.nature.com\/articles\/mp2017148.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/www.nature.com\/articles\/mp2017148","content-type":"text\/html","content-version":"vor","intended-application":"text-mining"},{"URL":"http:\/\/www.nature.com\/doifinder\/10.1038\/mp.2017.148","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"},{"URL":"https:\/\/www.nature.com\/articles\/mp2017148.pdf","content-type":"application\/pdf","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,4,1]],"date-time":"2022-04-01T02:52:13Z","timestamp":1648781533000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.nature.com\/articles\/mp2017148"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2017,8,8]]},"references-count":58,"journal-issue":{"issue":"11","published-print":{"date-parts":[[2017,11]]}},"alternative-id":["BFmp2017148"],"URL":"https:\/\/doi.org\/10.1038\/mp.2017.148","relation":{},"ISSN":["1359-4184","1476-5578"],"issn-type":[{"value":"1359-4184","type":"print"},{"value":"1476-5578","type":"electronic"}],"subject":[],"published":{"date-parts":[[2017,8,8]]},"assertion":[{"value":"26 March 2017","order":1,"name":"received","label":"Received","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"29 April 2017","order":2,"name":"revised","label":"Revised","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"30 May 2017","order":3,"name":"accepted","label":"Accepted","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"8 August 2017","order":4,"name":"first_online","label":"First Online","group":{"name":"ArticleHistory","label":"Article History"}},{"value":"The author declares no conflict of interest.","order":1,"name":"Ethics","group":{"name":"EthicsHeading","label":"Competing interests"}}]}}