1. Wellcome Trust-MRC Institute of Metabolic Science, University of Cambridge, Cambridge, United Kingdom.
2. Risch Laboratory Group, Lagerstrasse, Buchs, SG, Switzerland.
3. Department of Clinical Biochemistry, Addenbrooke's Hospital, Cambridge, United Kingdom.
4. Institute of Structural and Chemical Biology, University of Leicester, Leicester, United Kingdom.
5. eSwiss Medical and Surgical Center, St. Gallen, Switzerland.