1. Department of Intensive Care; Hospital Ramos Mejía; Ciudad Autónoma de Buenos Aires Argentina
2. School of Medicine; Universidad de Magallanes; Punta Arenas Chile
3. Critical Care Unit; Hospital Nacional Posadas; El Palomar. Morón Argentina
4. Hospital de Clínicas José de San Martín; Buenos Aires Argentina
5. Argentine Cochrane Centre; Institute for Clinical Effectiveness and Health Policy (IECS-CONICET); Buenos Aires Argentina