150
Participants
Start Date
July 31, 2013
Primary Completion Date
February 28, 2017
Study Completion Date
May 31, 2018
Cigarettes
Smoke their usual brand of cigarettes and follow their normal patterns of use.
Snus
Winterchill or Robust flavors
Roswell Park Cancer Center, Buffalo
Ohio State University Comprehensive Cancer Center, Columbus
Masonic Cancer Center, University of Minnesota, Minneapolis
National Cancer Institute (NCI)
NIH
University of Minnesota
OTHER