[1] Univ Oxford, Wellcome Trust Ctr Human Genet, Oxford, England
[2] Natl Univ Singapore, Saw Swee Hock Sch Publ Hlth, Singapore, Singapore
[3] Wake Forest Sch Med, Ctr Genom & Personalized Med Res, Winston Salem, NC USA
[4] Imperial Coll London, Sch Publ Hlth, London, England
[5] Univ Texas Hlth Sci Ctr Houston, Human Genet Ctr, Houston, TX 77030 USA
[6] Univ Michigan, Ctr Stat Genet, Ann Arbor, MI 48109 USA
[7] Univ Calif San Diego, Dept Pediat, La Jolla, CA 92093 USA
[8] Univ Liverpool, Dept Biostat, Liverpool, Merseyside, England