This international collaboration has been the largest ever to have taken place in a large scale study on genetic differences between patients infected by HIV, and is the first study of this kind in the field of infectious disease. Catalan participants have been coordinated by Javier Martínez-Picado, ICREA research professor in the Foundation irsiCaixa of Hospital Germans Trias i Pujol, and Josep M. Miró, consultant of the Unit of Infectious Diseases and AIDS of Hospital Clínic-IDIBAPS of Barcelona, and had the collaboration of Hospital de la Santa Creu i Sant Pau, and Hospital Mútua de Terrassa.
