title: [Research in surgery and the necessity for performing controlled, prospective, random clinical trials].
mesh_terms: D002986:Clinical Trials as Topic; D013502:General Surgery / Q000193:education; D006801:Humans; D011446:Prospective Studies; D011897:Random Allocation; D012106:Research; D013514:Surgical Procedures, Operative / Q000592:standards*
vernacular_title: Investigación en cirugía y la necesidad de realizar estudios clínicos controlados, prospectivos y randomizados.