[1] Kantonsspital Aarau, Med Univ Dept, Div Gen Internal & Emergency Med, Aarau, Switzerland
[2] Univ Basel, Med Fac, Basel, Switzerland
[3] Spital Lachen, Internal Med, Oberdorf, Switzerland
[4] New York Acad Sci, New York, NY USA
[5] Kantonsspital Muensterlingen, Internal Med, Muensterlingen, Switzerland
[6] Kantonsspital St Gallen, Internal Med & Endocrinol Diabet, St Gallen, Switzerland
[7] Kantonsspital Luzern, Internal Med, Luzern, Switzerland
[8] Buergerspital Solothurn, Dept Internal Med, Solothurn, Switzerland
[9] Kantonsspital Baden, Internal Med, Baden, Switzerland
[10] Univ Bern, Bern Univ Hosp, Inselspital, Dept Gen Internal Med, Bern, Switzerland
[11] Univ Bern, Inst Primary Hlth Care BIHAM, Bern, Switzerland
[12] Brigham & Womens Hosp, Div Gen Internal Med, 75 Francis St, Boston, MA 02115 USA
[13] Univ Bern, Bern Univ Hosp, Inselspital, Div Diabetol Endocrinol Nutr Med & Metab, Bern, Switzerland