Obstetrics and Gynecology Research Maternal Fetal Medicine Maternal Fetal Medicine Image Presented at SMFM Annual Conference 2021: Maternal and neonatal outcomes in women with opioid use disorder treated with buprenorphine versus buprenorphine/naloxone Cervicovaginal Fluid (CVF) TNFα as a Biomarker for Preterm Birth Prior spontaneous preterm birth: Subsequent pregnancy outcomes among women with PPROM vs spontaneous preterm labor Cervicovaginal Fluid (CVF) Cytokine Profiles vary by Obstetrical History Low dose aspirin influence on biomarkers of endothelial disruption and inflammation The influence of cigarette, electronic cigarette and dual-use exposure on maternal immune profiles