520
Participants
Start Date
June 30, 2015
Primary Completion Date
June 30, 2018
Study Completion Date
July 31, 2018
e-cigarette
cigarette substitute
Penn State Milton S. Hershey Medical Center, Hershey
Center for the Study of Tobacco Products, Richmond
National Institute on Drug Abuse (NIDA)
NIH
Penn State University
OTHER
Food and Drug Administration (FDA)
FED
Virginia Commonwealth University
OTHER