Portable HEPA filter air cleaner use during pregnancy and children's body mass index at two years of age: The UGAAR randomized controlled trial

Gestational exposure to particulate matter (PM) air pollution may increase the risk of childhood obesity, but the impact of reducing air pollution during pregnancy on obesity-related outcomes in childhood has not been examined. To assess the impact of reducing gestational PM exposure on body mass index (BMI) at two years of age. In this single-blind, parallel group randomized controlled trial in Ulaanbaatar Mongolia, we randomly assigned 540...