Methodological issues in the measurement of substance use.
Day
N L
NL
Western Psychiatric Institute and Clinic, University of Pittsburgh School of Medicine, Pennsylvania 15213.
Robles
N
N
D000428:Alcohol Drinking / Q000706:statistics & numerical data*; D003625:Data Collection; D005260:Female; D006801:Humans; D008385:Marijuana Smoking / Q000453:epidemiology*; D011247:Pregnancy