1. IrsiCaixa AIDS Research Institute, Badalona, Spain
2. Germans Trias i Pujol Research Institute (IGTP), Badalona, Spain
3. Unidad de Virología Molecular, Laboratorio de Referencia e Investigación en Retrovirus, Centro Nacional de Microbiología, Instituto de Salud Carlos III, Majadahonda, Madrid, Spain
4. Infectious Diseases Department, Hospital Universitari Germans Trias i Pujol, Badalona, Spain
5. University of Vic – Central University of Catalonia (UVic-UCC), Vic, Spain
6. Catalan Institution for Research and Advanced Studies (ICREA), Barcelona, Spain