M R Law, N J Wald, T Wu, A Hackshaw, A Bailey
Law M R, Wald N J, Wu T, Hackshaw A, Bailey A.
Systematic underestimation of association between serum cholesterol concentration and ischaemic heart disease in observational studies: data from the BUPA study
BMJ 1994; 308 :363
doi:10.1136/bmj.308.6925.363