[1] Queen Ingrids Hosp, Steno Diabet Ctr Greenland, Jens Kreutzmannip Aqq 11,Postbox 1001, Nuuk 3900, Greenland
[2] Univ Greenland, Inst Hlth & Nat, Greenland Ctr Hlth Res, Nuuk, Greenland
[3] Aarhus Univ Hosp, Dept Clin Med, Aarhus, Denmark
[4] Univ Southern Denmark, Natl Inst Publ Hlth, Ctr Publ Hlth Greenland, Copenhagen, Denmark
[5] Univ Copenhagen, Dept Publ Hlth, Sect Hlth Serv Res, Copenhagen, Denmark