Published studies examining factors that affect citations.

All studies were cohort studies of published articles except: * Cross-sectional studies, ** Randomized control trial.Abbreviations: Am J Psych: American Journal of Psychiatry, Arch Gen Psych: Archives of General Psychiatry, BJPsych: British Journal of Psychiatry, BMJ: British Medical Journal, CORR: Clinical Orthopedics and Related Research, JAMA: Journal of American Medical Association, JBJS Am vol.: Journal of Bone and Joint Surgery American Volume, JBJS Brit vol.: Journal of Bone and Joint Surgery British Volume JIF: Journal's Impact factor, NEJM: New England Journal of Medicine, NJPsych: Nordic Journal of Psychiatry, OA: Open Access, OR: Odds ratio, PNAS: Proceedings of the National Academy of Sciences, RCT: Randomized control trial.