1 Research Group of Cancer Biomarkers, Lleida Institute for Biomedical Research Dr Pifarré Foundation, IRBLleida, Lleida, Spain asorolla@irblleida.cat.
2 Research Group of Cancer Biomarkers, Lleida Institute for Biomedical Research Dr Pifarré Foundation, IRBLleida, Lleida, Spain.
3 Pleural Medicine Unit, Dept of Internal Medicine, Arnau de Vilanova University Hospital, Lleida, Spain.