is 2 packs of cigarettes a day too much Two still risks serious health issues — stay informed Most people think smoking only

Methods Design This study primarily adapted the research design and protocol of the Tobacco Pack Surveillance System (TPackSS) and its 2015 Field Collection Protocol developed by the Institute for Global Tobacco Control (IGTC) at the Johns Hopkins Bloomberg School of Public Health [36]

Archived from the original on July 25, 2021

Products containing over 20mg per ml of nicotine cannot be sold unless they have a medicinal licence.[26] Zero nicotine products are not included in the TPD and do not require a medicinal licence

The Institutional Review Boards (IRB) at Vanderbilt University and Meharry Medical College approved the SCCS, and the IRB at Boston University approved the BWHS