From the Clinical Addiction Research and Education (CARE) Unit (RS, DPA, DMC, JS), Section of General Internal Medicine, Boston Medical Center and Boston University School of Medicine; Youth Alcohol Prevention Center (RS, TP), Departments of Epidemiology (RS), Social and Behavioral Sciences (JB, JS), Maternal and Child Health (JB), Emergency Medicine (JB), and Biostatistics (DMC), Boston University School of Public Health, Boston, MA; and Department of Psychology (TP), Boston University, Boston, MA.