There is also a risk that some earlier studies have identified individuals with a more severe CD than in the average patient with CD since studies were limited to one (sometimes tertiary) centre [19, 22, 23, 25], and this may bias the RRs in either direction
[Google Scholar] Tobacco-specific nitrosamines in smokeless tobacco products marketed in India
Similarly, the disparity between those with and without financial difficulties was almost twice as large when considering current smoking or discounted pack-years compared to ever smoking, which reflects the higher quitting rates observed among those in higher socioeconomic groups 19,42,43
Revealing Raleighs cynicism about monarchy, James I and the Archbishop of Canterbury, George Abbot, demanded copies to be seized and publication banned