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Liu L, Yang X, Liu H, Wang M, Welles S, Márquez S, Frank A, Haas CN.Liu L, et al. Among authors: marquez s.Front Public Health. 2016 Jul 18;4:143. doi: 10.3389/fpubh.2016.00143. eCollection 2016.Front Public Health. 2016.PMID: 27486572Free PMC article.