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Paterson QS, Thoma B, Milne WK, Lin M, Chan TM.Paterson QS, et al. Among authors: thoma b.J Grad Med Educ. 2015 Dec;7(4):549-54. doi: 10.4300/JGME-D-14-00728.1.J Grad Med Educ. 2015.PMID: 26692965Free PMC article.Review.