6 Division of Clinical Epidemiology and Aging Research, German Cancer Research Center (DKFZ), Heidelberg, Germany 7 Unit Cancer Prevention, German Cancer Research Center (DKFZ), Heidelberg, Germany ...
Background In 2009, a US$21.95 per pound disparity was created in the Federal excise tax between roll-your-own cigarette tobacco (RYO) and pipe tobacco in the USA. After this disparity was created, ...