1. University of Medicine and Pharmacy “Grigore T. Popa” Iași, Pulmonology Department, Head of Clinic of Pulmonary Diseases, Iasi, Romania
2. University of Medicine and Pharmacy “Grigore T. Popa” Iași, Department Thoracic Surgery, Clinic of Thoracic Surgery Iași, Hospital of Pulmonary Diseases Iasi, Iasi, Romania
3. Clinic of Pulmonary Diseases, Iasi, Romania
4. Department of Interventional Cardiology-Cardiovascular Diseases Institute, Iasi, Romania
5. Institute of Gastroenterology and Hepatology, Iași, Romania
6. “Grigore T. Popa” University of Medicine, Iasi, Romania
7. University of Medicine and Pharmacy “Grigore T. Popa” Iași, Pulmonology Department, Institute of Oncology, Iași, Romania