DSM-IV: empirical, accessible, not yet ideal.
Nathan
P E
PE
D003937:Diagnosis, Differential; D006801:Humans; D001523:Mental Disorders / Q000145:classification / Q000175:diagnosis* / Q000523:psychology; D011569:Psychiatric Status Rating Scales / Q000706:statistics & numerical data*; D011594:Psychometrics; D015203:Reproducibility of Results