Validity of specific subscales of the positive and negative symptom scales in older schizophrenia outpatients.
McAdams LA, Harris MJ, Heaton SC, Bailey A, Fell R, Jeste DV. Validity of specific subscales of the positive and negative symptom scales in older schizophrenia outpatients. Schizophr Res. 1997 Oct 30; 27(2-3):219-26.