[1] NCI, Div Canc Epidemiol & Genet, NIH, US Dept HHS, Bethesda, MD 20892 USA
[2] Whipps Cross Univ Hosp, Barts Hlth NHS Trust, Obstet & Gynaecol, London, England
[3] Kings Coll London, Fac Life Sci & Med, Sch Canc & Pharmaceut Sci, Comprehens Canc Ctr,Canc Behav Sci, London, England
[4] Kings Coll London, Fac Life Sci & Med, Sch Canc & Pharmaceut Sci, Comprehens Canc Ctr, London SE1 9RT, England
[5] Kings Coll London, Fac Life Sci & Med, Sch Canc & Pharmaceut Sci, Comprehens Canc Ctr,Canc Prevent, London, England
[6] Kings Coll London, Sch Populat Hlth & Environm Sci, London, England
[7] Publ Hlth England, Natl Canc Anal & Registrat Serv, London, England