[1] Karolinska Univ Hosp, Hepatol Unit, Ctr Digest Dis, Stockholm, Sweden
[2] Karolinska Inst, Dept Med Solna, Clin Epidemiol Unit, Stockholm, Sweden
[3] Karolinska Inst, Dept Environm Med, Unit Biostat, Stockholm, Sweden
[4] Univ Gothenburg, Sahlgrenska Acad, Inst Med, Dept Mol & Clin Med, Gothenburg, Sweden
[5] Univ Gothenburg, Wallenberg Lab, Sahlgrenska Acad, Inst Med, Gothenburg, Sweden
[6] Imperial Coll London, Inst Reprod & Dev Biol, London, England
[7] Kings Coll London, Womens Hlth Acad Ctr, London, England
[8] Kings Coll Hosp London, Inst Liver Studies, London, England
[9] Royal Free Hosp, London, England
[10] Karolinska Inst, Dept Med Epidemiol & Biostat, Stockholm, Sweden
[11] Karolinska Inst, Div Obstet & Gynecol, Dept Womens & Childrens Hlth, Stockholm, Sweden