title: Comment on the letter by W.H.J. Martens.
authors.forename: N
authors.initials: N
authors.lastname: Sartorius
mesh_terms: D006801:Humans; D001523:Mental Disorders / Q000145:classification / Q000175:diagnosis* / Q000503:physiopathology; D009446:Neurobiology / Q000639:trends*; D011569:Psychiatric Status Rating Scales; D011570:Psychiatry / Q000639:trends; D011594:Psychometrics