University of Minnesota, Saint Paul, Minnesota, United States
University of Minnesota, Saint Paul, Minnesota, United States
University of Minnesota Medical Center, Fairview, Minneapolis, Minnesota, United States
Tobacco Research Center, Minneapolis, Minnesota, United States
Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States
Mulago Hospital, Kampala, Uganda
University of Minnesota, Minneapolis, Minnesota, United States
Tobacco Use Research Center, Minneapolis, Minnesota, United States
Masonic Cancer Center, University of Minnesota, Minneapolis, Minnesota, United States
University of Minnesota, Minneapolis, Minnesota, United States