1. From St. George’s Hospital and Medical School (I.M., A.-M.B.) and Whipps Cross Hospital (F.S.), London, the University of Glasgow, Glasgow (M.-A.L., J.M., O.W.), the University of Birmingham, Birmingham (W.M., L.J.M., V.C.), the University of Nottingham, Nottingham (J.P.D.), and the University of Oxford, Oxford (K.M.) — all in the United Kingdom.