1. Department of Internal Medicine; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona; Spain
2. Department of Respiratory Diseases Health; Hospital Clínic; Institut d'Investigacions Biomèdiques August Pi i Sunyer (IDIBAPS); University of Barcelona; Barcelona; Spain
3. Quick Diagnosis Unit; Department of Internal Medicine; Hospital Universitari de Bellvitge; Institut d'Investigacions Biomèdiques de Bellvitge (IDIBELL); University of Barcelona; L'Hospitalet de Llobregat; Barcelona; Spain