1 Centre of Excellence for Health, Immunity and Infections, Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark; alvaro.borges@regionh.dk.
2 Division of Biostatistics, School of Public Health, University of Minnesota, Minneapolis.
3 Medical Research Council Clinical Trials Unit at University College London, United Kingdom.
4 Division of Infectious Diseases, Weill Cornell Medicine, New York, New York; and.
5 Center for Clinical AIDS Research and Education, David Geffen School of Medicine, University of California, Los Angeles.