This aspect was also observed in the study by Leffondr et al.11 in which it was indicated that, in current smokers, the use of pack-years underestimates the impact of intensity and overestimates that of duration
International Institute for Democracy and Electoral Assistance
It's particularly popular among users who enjoy flavored options
Thomas Frieden, the CDC's director, wrote in a JAMA commentary
He regularly presents at regional, national and global conferences and has been a guest lecturer at Georgetown University Law Center, University of Maryland School of Law, University of Maryland School of Nursing, Johns Hopkins University School of Public Health, Howard University School of Public Health, University of Illinois-Chicago, & Gettysburg College