Journal of Drug Issues Jessup M, Humphreys J, Brindis CD, Lee K. Extrinsic Barriers to Substance Abuse Treatment among Pregnant Drug Dependent Women. Journal of Drug Issues. 2003; 2(33):285-304. 2003 https://researcherprofiles.org/profile/24258992 Jessup M, Humphreys J, Brindis CD, Lee K