[1] Natl Hosp Org, Okayama Med Ctr, Dept Diabetol & Metab, Kita Ku, Okayama 7011192, Japan
[2] Steno Diabet Ctr, DK-2820 Gentofte, Denmark
[3] Novo Nordisk AS, Soborg, Denmark
[4] Okayama Univ, Grad Sch Med Dent & Pharmaceut Sci, Dept Med & Clin Sci, Kita Ku, Okayama 7008558, Japan
[5] Lund Univ, Dept Clin Sci, Univ Hosp MAS, Malmo, Sweden
[6] Rigshosp, Dept Diabet & Metab, DK-2100 Copenhagen, Denmark