José M. Porcel, Pleural Medicine and Clinical Ultrasound Unit, Department of Internal Medicine, Arnau de Vilanova University Hospital, Lleida, Spain; Research Group of Cancer Biomarkers (GReBIC), IRBLeida, Lleida, Spain
Laura Porcel, Department of Internal Medicine, Hospital Universitario Príncipe de Asturias, Alcalá de Henares, Madrid, Spain
