1. Research Centre for Prevention and Health (C.C., T.J.), Glostrup University Hospital, DK-2600 Glostrup, Denmark
2. Department of Endocrinology and Gastroenterology (N.K., H.P.), Bispebjerg University Hospital, DK-2400 Copenhagen, Denmark
3. Department of Gastroenterology (L.O.), Slagelse Hospital, DK-4200 Slagelse, Denmark
4. Danish Institute for Food and Veterinary Research (L.B.R.), DK-2860 Copenhagen, Denmark
5. Department of Endocrinology (P.L.), Aalborg Hospital, Aarhus University Hospital, DK-9100 Aalborg, Denmark