David Ronayne, Chris Doyle and Daniel Sgroi of University of Warwick found that 37% of smokers who use e-cigarettes view them mainly as a complementary product to traditional cigarettes, rather than a substitute.
David Ronayne, Chris Doyle and Daniel Sgroi of University of Warwick found that 37% of smokers who use e-cigarettes view them mainly as a complementary product to traditional cigarettes, rather than a substitute.