A set of training materials for professionals working in intervention epidemiology, public health microbiology and infection control and hospital hygiene.
I read somewhere that these criteria are not valid absolutely. Coudl anybody provide more information?
Bradford Hill is supposed to have stated that we probably should not see these as strict "criteria", but rather view them as "conditions". In fact most of these conditions will be very difficult to completely satisfy, even in the compelling evidence for smoking and lung cancer