1 Department of Endocrinology, Hvidovre Hospital, University of Copenhagen, Hvidovre, Copenhagen, Denmark. Electronic address: sten.madsbad@regionh.dk.
2 Center for Clinical Metabolic Research, Gentofte Hospital, University of Copenhagen, Hellerup, Denmark.
3 Department of Biomedical Sciences, University of Copenhagen, Denmark; Novo Nordisk Foundation Center for Basic Metabolic Research, University of Copenhagen, Denmark.