Mutations in the HFE gene and cardiovascular disease risk: an individual patient data meta-analysis of 53 880 subjects - van der A, D.; Rovers, M.; Grobbee, D.; Marx, J.; Waalen, J.; Ellervik, C.; Nordestgaard, B.; Olynyk, John; Mills, P.; Shepherd, J.; Grandchamp, B.; Boer, J.; et al. (Lippincott Williams & Wilkins, 2008)