1. Department of Infectious Diseases, Hospital Universitario Ramón y Cajal, IRYCIS, Madrid, Spain;
2. Department of Infectious Diseases, Hospital Clínic, Barcelona, Spain;
3. Department of Internal Medicine, Hospital Universitario La Paz, Madrid, Spain;
4. HIV Unit & Lluita Contra la SIDA Foundation, Hospital Universitari Germans Trias i Pujol, Badalona, Spain;
5. Department of Infectious Diseases, Microbiology and Preventive Medicine, Hospital Universitario Virgen del Rocío, Sevilla, Spain