We propose a novel two-step procedure to combine epidemiological
data obtained from diverse sources with the aim to quantify risk factors
affecting the probability that an individual develops certain disease such as
cancer. See Hui Huang, Xiaomei Ma, Rasmus Waagepetersen, Theodore R. Holford,
Rong Wang, Harvey Risch, Lloyd Mueller & Yongtao Guan (2014) A New Estimation Approach
for Combining Epidemiological Data From Multiple Sources, Journal of the American Statistical
Association, 109:505, 11-23,