Back to matchesWe found a matchYour institution may have access to this item. Find your institution then sign in to continue.TitleEstudios clínicos experimentales.AuthorsCalva-Mercado, Juan JoséPublicationSalud Pública de México, 2000, Vol 42, Issue 4, p349ISSN0036-3634Publication typeArticleDOI10.1590/S0036-36342000000400010