1. United Nations Office on Drugs and Crime. World Drug Report. 2017.
2. CDC grand rounds: Prescription drug overdoses-a US epidemic;Centers for Disease Control and Prevention;Morbidity and Mortality Weekly Report,2012
3. Relationship between nonmedical prescription-opiod use and heroin use;WM Compton;The New England Journal of Medicine,2016
4. National trends in maternal use of opioid drugs among pregnancy-related hospitalizations in the United States, 1998 to 2009;HM Salihu;Am J Perinatol,2015
5. Neonatal drug withdrawal;American Academy of Pediatrics;Pediatrics,1998