Institution: | a Division of Metabolic Diseases, Karolinska Institutet, SE-141 86 Stockholm, Sweden b Department of Clinical Chemistry, Sahlgrenska University Hospital, Göteborg, Sweden c Molecular Biology Program, Memorial Sloan-Kettering Cancer Center, New York, NY 10021, USA d Max-Planck-Institut für Biologie des Alterns, Gleueler Str. 50a, D-50931 Cologne, Germany e Department of Medical Biochemistry and Cell Biology, Göteborg University, Göteborg, SE-405 30, Sweden |