title: An attempt at validation of traditional psychiatric syndromes by cluster analysis.
mesh_terms: D001007:Anxiety / Q000175:diagnosis; D003937:Diagnosis, Differential; D005163:Factor Analysis, Statistical; D006212:Hallucinations; D006801:Humans; D007046:Hysteria / Q000175:diagnosis; D008131:London; D001523:Mental Disorders / Q000175:diagnosis*; D008722:Methods; D009518:New York; D011581:Psychological Tests; D013223:Statistics as Topic; D019966:Substance-Related Disorders