|
Smoking, smokeless tobacco and cancer (2) My previous post discussed toxin delivery from different tobacco products. Similarly, of we are asked whether some types of smokeless tobacco may be less harmful than others, it seems prudent to suggest...
|
|
The study was conducted at Johns Hopkins between 2000 and 2005 and included biological specimens as well as an audio, computer-assisted self-administered interview from 200 patients. Anyone of these hidden or "intervening" variables could be the...
|