Frontiers Effects of E Cigarette Exposure on Prenatal Life and Childhood Respiratory Health: A Review of Current Evidence Chemicals Exposure to Thirdhand Smoke Harms the Health of Pregnant Women Thirdhand Smoke Resource Center Can you vape during pregnancy? Allen Carr's Easyway Electronic cigarette use (vaping) and patterns of tobacco cigarette smoking in pregnancyevidence from a population based maternity survey in England PLOS One