Reducing variability in international research.
D000342:Affective Symptoms / Q000175:diagnosis; D002389:Catatonia / Q000175:diagnosis; D003072:Cognition Disorders / Q000175:diagnosis; D003861:Depersonalization / Q000175:diagnosis; D006801:Humans; D007391:International Cooperation; D007802:Language; D008722:Methods; D009497:Neurotic Disorders / Q000175:diagnosis; D012106:Research; D012559:Schizophrenia / Q000145:classification / Q000175:diagnosis*; D009626:Terminology as Topic; D014944:World Health Organization