The impact of cocaine and marijuana use on low birth weight and preterm birth: a multicenter study.
American Journal of Obstetrics and Gynecology, January 1995
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OBJECTIVE: Our aim was to evaluate prospectively the effects of cocaine and marijuana use on pregnancy outcomes. STUDY DESIGN: A prospective multicenter cohort study was conducted at seven university-based prenatal clinics in the United States from 1984 to 1989. The cohort des…