Household Surveys in the General Population and Web-Based Surveys in IQOS Users Registered at the Philip Morris International IQOS User Database: Protocols on the Use of Tobacco- and Nicotine-Containing Products in Germany, Italy, and the United Kingdom (Greater London), 2018-2020.
Zheng Sponsiello-WangPeter LangerLuis PrietoMariia DobryninaDimitra SkiadaNathalie CamilleRolf WeitkunatFrank LüdickePublished in: JMIR research protocols (2019)
DERR1-10.2196/12061.