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Shea JA, Bellini LM, Dinges DF, Curtis ML, Tao Y, Zhu J, Small DS, Basner M, Norton L, Novak C, Dine CJ, Rosen IM, Volpp KG.Shea JA, et al. Among authors: norton l.J Grad Med Educ. 2014 Jun;6(2):256-63. doi: 10.4300/JGME-D-13-00241.1.J Grad Med Educ. 2014.PMID: 24949128Free PMC article.