Schneller-Prevalence-of-conventional-cigs-TCORS-Grantees-meeting-2020 Prevalence of conventional cigarette and electronic nicotine delivery system use prior to conception and behavior change during pregnancy Findings from the Pregnancy Risk Assessment Monitoring System Phase 8 ( 2016 2017) Liane M. Schneller, Abigail S. Friedman, Deborah J. Ossip, Elaine L. Hill