1. Orthopaedic Hospital Research Center (R.F.C., L.S., J.A., M.H.), David Geffen School of Medicine at UCLA, Los Angeles, California 90095
2. Clinical Biochemistry Department (A.L.L.), Randers Regional Hospital, Randers, Denmark 8930
3. Department of Biochemistry (L.A.Z., J.W.P.), University of Wisconsin-Madison, Madison, Wisconsin 53706
4. Molecular Biology Institute (R.L.M., J.A., M.H.), University of California Los Angeles (UCLA), David Geffen School of Medicine at UCLA, Los Angeles, California 90095
5. Department of Dermatology (R.L.M.), David Geffen School of Medicine at UCLA, Los Angeles, California 90095
6. Centre for Health Sciences (A.R.M.), Queen Mary’s School of Medicine and Dentistry, Barts and The London, London E1 2AT, United Kingdom
7. Medical Research Council National Institute for Medical Research (A.R.M., R.J.W.), Mill Hill, London NW7 1AA, United Kingdom
8. Division of Medicine (R.J.W.), Imperial College London W2 1PG, United Kingdom
9. Institute of Infectious Diseases and Molecular Medicine (R.J.W.), University of Cape Town, Observatory 7925, South Africa