1. Unit of Synthesis and Biomedical Applications of Peptides (IQAC-CSIC), Barcelona, Spain
2. Faculty of Medicine, University of Leipzig, Leipzig, Germany
3. AIDS-Research Group, IDIBAPS, Barcelona, Spain
4. Services of Infectious Diseases and Immunology, Hospital Clinic Barcelona, University of Barcelona, Spain
5. GI/Hepatology Research Program, Division of Gastroenterology, Duke Clinical Research Institute, Duke University, Durham, North Carolina