1. Department of Pharmaceutical Biosciences School of Pharmacy University of Oslo Oslo Norway
2. Department of Transplant Medicine Oslo University Hospital Rikshospitalet, Oslo Norway
3. Laboratory for Applied Pharmacokinetics University of Southern California Los Angeles CA USA
4. Department of Medical Biochemistry Oslo University Hospital Rikshospitalet, Oslo Norway
5. Department of Pharmacology Oslo University Hospital Rikshospitalet, Oslo Norway