TY - JOUR KW - Adolescent KW - Female KW - Humans KW - Practice Guidelines as Topic KW - Pregnancy KW - Prenatal Care/standards KW - Substance Abuse Detection/methods/standards KW - Substance-Related Disorders/diagnosis AU - K. W. Lin AU - V. W. Finnell A1 - BT - American Family Physician C5 - Opioids & Substance Use CP - 6 CY - United States IS - 6 JF - American Family Physician PP - United States PY - 2009 SN - 1532-0650; 0002-838X SP - 629 T1 - Screening for illicit drug use T2 - American Family Physician TI - Screening for illicit drug use U1 - Opioids & Substance Use U2 - 19817329 VL - 80 VO - 1532-0650; 0002-838X Y1 - 2009 ER -