After finishing his medical residency in internal medicine at the Hospital Universitari de Bellvitge, he started visiting HIV-infected patients in the early years of the epidemic, in the mid 80s. Therefore, he lived the different stages of the history of AIDS when it was a fatal disease and patients died every day until today that HIV has become a chronic disease with prolonged survival and excellent quality of life of patients receiving antiretroviral therapy. He is currently the head of the HIV and STI Unit within the Infectious Diseases Service at the Hospital Universitari de Bellvitge, with his professional performance he has been able to contribute to clinical research, participating and organizing clinical trials related to opportunistic infections, HIV complications and antiretroviral therapy. He is co-author of more than 250 scientific articles published in national and international journals such as New Engl J Med, Lancet, Ann Intern Med, Infect Dis Clin, J Infect Dis i JAIDS among others. He has also participated in expert panels for guidelines for the management of opportunistic infections (NIH/CDC/IDSA) and antiretroviral therapy, opportunistic infections and neurocognitive disorders (GESIDA). He is also a reviewer for several international journals.