[1] Univ Otago, Dept Med, Dunedin, New Zealand
[2] Univ Otago, Edgar Diabet & Obes Res Ctr, Dunedin, New Zealand
[3] Phys Comm Responsible Med, Washington, DC USA
[4] Inst Clin & Expt Med, Diabet Ctr, Prague, Czech Republic
[5] Univ Eastern Finland, Inst Publ Hlth & Clin Nutr, Sch Med, Kuopio, Finland
[6] Aarhus Univ Hosp, Dept Endocrinol & Internal Med, Aarhus, Denmark
[7] Oslo Univ Hosp, Div Med, Oslo, Norway
[8] Univ Oslo, Inst Clin Med, Oslo, Norway
[9] Kuopio Univ Hosp, Dept Med Endocrinol & Human Nutr, Kuopio, Finland
[10] Univ Glasgow, Sch Med Dent & Nursing, Dept Human Nutr, Glasgow, Scotland
[11] Charite Univ Med Berlin, Dept Endocrinol Diabet & Nutr, Berlin, Germany
[12] Univ Rovira i Virgili, Inst Invest Sanitaria Pere Virgili, Dept Bioquim & Biotecnol, Reus, Spain
[13] Inst Salud Carlos III, CIBER Fisiopatol Obes & Nutr CIBER Obn, Madrid, Spain