PT - JOURNAL ARTICLE AU - James D Shelton TI - Reduced Effectiveness of Contraceptive Implants for Women Taking the Antiretroviral Efavirenz (EFV): Still Good Enough and for How Long? AID - 10.9745/GHSP-D-15-00356 DP - 2015 Dec 01 TA - Global Health: Science and Practice PG - 528--531 VI - 3 IP - 4 4099 - http://www.ghspjournal.org/content/3/4/528.short 4100 - http://www.ghspjournal.org/content/3/4/528.full SO - GLOB HEALTH SCI PRACT2015 Dec 01; 3