1. Department of Infectious Diseases, Hospital Clínic Barcelona, Barcelona, Spain.
2. AIDS and HIV Infection Research Group, IDIBAPS, Barcelona, Spain.
3. Faculty of Medicine, Universitat de Barcelona, Barcelona, Spain.
4. AIDS Immunopathogenesis Unit, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Madrid, Spain.
5. Department of Pharmacology, Faculty of Pharmacy, Universidad Complutense de Madrid, Madrid, Spain.
6. Endoscopy Unit, Hospital Clínic Barcelona, CIBERehd, Barcelona, Spain.
7. Division of Pharmacotherapy and Experimental Therapeutics, University of North Carolina at Chapel Hill, Eshelman School of Pharmacy, Chapel Hill, North Carolina, USA.
8. ViiV Healthcare, Barcelona, Spain.