Vallejo, MD, DMD, M. C., R. E. Shapiro, MD, M. W. Lippy, BS, C. L. Lilly, PhD, and L. R. Brancazio, MD. “Independent Risk Factors for Chronic Illicit Substance Use During Pregnancy”. Journal of Opioid Management, vol. 16, no. 5, Sept. 2020, pp. 351-6, doi:10.5055/jom.2020.0590.