1. Compliance policy for limited modifications to certain marketed tobacco products Publication: Silver Spring, MD : Center for Tobacco Products, November 2019 Subject(s): Electronic Nicotine Delivery Systems -- standardsNicotine -- adverse effectsTobacco Products -- adverse effectsChildConsumer Product SafetyEquipment FailureProduct PackagingHumansUnited StatesUnited States. Department of Health and Human Services.United States. Food and Drug Administration.