38
Participants
Start Date
July 23, 2015
Primary Completion Date
February 2, 2018
Study Completion Date
February 2, 2018
Tobacco Cigarette
Usual brand tobacco cigarette smoked by study participant.
Electronic Cigarette
Usual brand electronic cigarettes smoked by study participant.
San Francisco General Hospital (SFGH), San Francisco
University of California, San Francisco (UCSF), San Francisco
National Institutes of Health (NIH)
NIH
Roswell Park Cancer Institute
OTHER
National Institute on Drug Abuse (NIDA)
NIH
University of California, San Francisco
OTHER