[1] Med Univ Graz, Div Endocrinol & Nucl Med, Dept Internal Med, A-8036 Graz, Austria
[2] Vrije Univ Amsterdam Med Ctr, EMGO Inst, NL-1081 BT Amsterdam, Netherlands
[3] Maastricht Univ, Dept Med, Med Ctr, NL-6229 HX Maastricht, Netherlands
[4] Vrije Univ Amsterdam, Fac Earth & Life Sci, Dept Hlth Sci, NL-1081 HV Amsterdam, Netherlands
[5] Brigham & Womens Hosp, Dept Med, Channing Lab, Boston, MA 02115 USA
[6] Vrije Univ Amsterdam Med Ctr, Dept Gen Practice, NL-1081 BT Amsterdam, Netherlands
[7] Vrije Univ Amsterdam Med Ctr, Dept Epidemiol & Biostat, NL-1081 BT Amsterdam, Netherlands
[8] Vrije Univ Amsterdam Med Ctr, EMGO Inst Hlth & Care Res, NL-1081 BT Amsterdam, Netherlands
[9] Harvard Univ, Sch Med, Boston, MA 02115 USA
[10] Harvard Univ, Sch Publ Hlth, Dept Nutr, Cambridge, MA 02138 USA