title: Methodological problems of prophylactic trials in recurrent affective disorders.
mesh_terms: D000342:Affective Symptoms / Q000517:prevention & control*; D002986:Clinical Trials as Topic; D004992:Ethics, Medical; D006801:Humans; D008094:Lithium / Q000627:therapeutic use*; D008722:Methods; D011618:Psychotic Disorders / Q000517:prevention & control*
chemical_list: D008094:Lithium