1. Manchikanti L, Fellows B, Ailinani H, Pampati V . Therapeutic use, abuse, and nonmedical use of opioids: a ten-year perspective. Pain Physician 2010; 13 (5): 401–435.
2. Centers for Disease Control and Prevention (CDC). Drug overdose deaths—Florida, 2003-2009. MMWR Morb Mortal Wkly Rep 2011; 60 (26): 869–872.
3. Centers for Disease Control and Prevention (CDC). Vital signs: overdoses of prescription opioid pain relievers—United States, 1999–2008. MMWR Morb Mortal Wkly Rep 2011; 60 (43): 1487–1481.
4. Creanga AA, Sabel JC, Ko JY, Wasserman CR, Shapiro-Mendoza CK, Taylor P et al. Maternal drug use and its effect on neonates: a population-based study in Washington State. Obstet Gynecol 2012; 119 (5): 924–933.
5. Epstein RA, Bobo WV, Martin PR, Morrow JA, Wang W, Chandrasekhar R et al. Increasing pregnancy-related use of prescribed opioid analgesics. Ann Epidemiol 2013; 23 (8): 498–503.