1. University Hospital Basel and University of Basel, Basel, Switzerland (F.C., H.C.B.)
2. Boston University School of Public Health, Boston, Massachusetts (S.L.)
3. Harvard T.H. Chan School of Public Health, Boston, Massachusetts (R.L.)
4. Rigshospitalet, University of Copenhagen, Copenhagen, Denmark (L.R., O.K., C.I.H., J.D.L.)
5. University College London, London, United Kingdom (A.M., A.P., C.S.)
6. Azienda Ospedaliera-Polo, Universitario San Paolo, Milan, Italy (A.D.M.)
7. Amsterdam University Medical Centers, University of Amsterdam, and HIV Monitoring Foundation, Amsterdam, the Netherlands (P.R.)
8. ICAP at Columbia University and Harlem Hospital, New York, New York (W.E.)
9. Nice University Hospital, Nice, France (C.P.)
10. Hôpital Saint-André and Université de Bordeaux, Bordeaux, France (F.B.)
11. University of New South Wales Sydney, Sydney, Australia (M.L.)
12. Saint Pierre University Hospital, Université Libre de Bruxelles, Brussels, Belgium (S.D.).