[1] Ctr Diabet & Metab, Bad Heilbrunn, Germany
[2] Novo Nordisk Ltd, Crawley, England
[3] Inst Metab Dis & Nutr, Med Abt Stoffwechselerkrankungen & Nephrol, Vienna, Austria
[4] Triemli City Hosp, Dept Endocrinol & Diabet, Zurich, Switzerland
[5] Novo Nordisk Pharma GmbH, Dept Diabet, Mainz, Germany
[6] Univ Tubingen, Med Klin 4, Tubingen, Germany