1. William Harvey Research Institute, Barts & The London School of Medicine & Dentistry, Queen Mary University of London, UK (K.J.B., A.A.A., A.J.M., J.P.D., A.J.H.).
2. University of Sydney, Kolling Institute of Medical Research, St Leonards, Australia (K.J.B., O.T.).
3. Centre for Rheumatology and Connective Tissue Diseases, University College London Medical School, Royal Free Campus, UK (S.L., D.J.A., J.T.).
4. Centre for Cardiovascular Biology and Medicine, Division of Medicine, University College London, UK (V.M., I.C.Z.).