1. Morbid Obesity Centre, Department of MedicineVestfold Hospital Trust Tønsberg Norway
2. Department of SurgeryVestfold Hospital Trust Tønsberg Norway
3. Department of Endocrinology, Morbid Obesity and Preventive Medicine, Institute of Clinical MedicineUniversity of Oslo Oslo Norway
4. Section of Pharmacology and Pharmaceutical Biosciences, Department of PharmacyUniversity of Oslo Oslo Norway
5. Library of Health SciencesVestfold Hospital Trust Tønsberg Norway
6. Department of Transplantation MedicineOslo University Hospital‐Rikshospitalet Oslo Norway