Choi, S.K. et al. 2018. Varenicline is More Effective than Nicotine Replacement Therapy During Pregnancy: Findings from the Smoking MUMS (Maternal Use of Medications and Safety) Study. International Journal of Population Data Science. 3, 4 (Aug. 2018). DOI:https://doi.org/10.23889/ijpds.v3i4.619.