title: Studies to compare treatment regimens: the randomized clinical trial and alternative strategies.
mesh_terms: D002986:Clinical Trials as Topic; D008137:Longitudinal Studies; D018579:Patient Selection; D011446:Prospective Studies; D011897:Random Allocation; D012107:Research Design; D035842:Research Subjects; D012189:Retrospective Studies; D036302:Therapeutic Human Experimentation