[1] Univ Bern, Dept Gen Internal Med, Inselspital, CH-3010 Bern, Switzerland
[2] Univ Lausanne, Dept Ambulatory Care & Community Med, Lausanne, Switzerland
[3] Leiden Univ, Dept Publ Hlth & Primary Care, Med Ctr, Leiden, Netherlands
[4] Univ Calif San Francisco, Dept Med, San Francisco, CA USA
[5] Univ Calif San Francisco, Dept Epidemiol & Biostat, San Francisco, CA 94143 USA
[6] Univ Penn, Sch Med, Dept Med, Div Endocrinol Diabet & Metab, Philadelphia, PA 19104 USA
[7] Tuscany Reg G Monasterio Fdn, Natl Council Res Inst Clin Physiol, Pisa, Italy
[8] Norwegian Univ Sci & Technol, Dept Publ Hlth, Trondheim, Norway
[9] Univ Fed Sao Paulo, Div Endocrinol, Dept Med, Sao Paulo, Brazil
[10] Fac Med Marilia, Div Endocrinol, Marilia, Brazil
[11] Univ Greifswald, Inst Community Med, Greifswald, Germany
[12] Univ Western Australia, Sch Populat Hlth, Crawley, Australia
[13] Univ Western Australia, Sch Med & Pharmacol, Crawley, Australia
[14] Univ Cambridge, Dept Publ Hlth & Primary Care, Cambridge, England
[15] European Inst Oncol, Div Epidemiol & Biostat, Milan, Italy
[16] Univ Pittsburgh, Dept Epidemiol, Pittsburgh, PA 15261 USA
[17] Leiden Univ, Dept Gerontol & Geriatr, Med Ctr, Leiden, Netherlands
[18] Netherlands Consortium Hlth Ageing, Leiden, Netherlands
[19] Univ Birmingham, Sch Clin & Expt Med, Coll Med & Dent Sci, Birmingham, W Midlands, England
[20] Sir Charles Gairdner Hosp, Dept Endocrinol & Diabet, Nedlands, WA 6009, Australia