Affiliation: | 1.Morbid Obesity Center,Vestfold Hospital Trust,T?nsberg,Norway;2.Department of Medicine,Rikshospitalet University Hospital,Oslo,Norway;3.Institute of Clinical Medicine,University of Troms?,Troms?,Norway;4.Department of Clinical Chemistry,Vestfold Hospital Trust,T?nsberg,Norway;5.Department of Biostatistics, Institute of Basic Medical Sciences,University of Oslo,Oslo,Norway |