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Vargas M P, Saavedra P S, Araya A MV, Loyola A K, Huerta G P, Silva A M, Araya C S, Saavedra A W, Portales P P, Saavedra P W.Vargas M P, et al. Among authors: huerta g p.Rev Med Chil. 2016 Sep;144(9):1144-1149. doi: 10.4067/S0034-98872016000900007.Rev Med Chil. 2016.PMID: 28060975Free article.Spanish.