1. Doctoral School of the Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania
2. Clinical Hospital of Pulmonary Diseases, 700115 Iasi, Romania
3. Department of Medical Sciences III, Pulmonology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania
4. Department of Biomedical Sciences, Faculty of Medical Bioengineering, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania
5. Regional Institute of Oncology, 700483 Iasi, Romania
6. Department of Surgery, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania
7. St. Spiridon Emergency Hospital, Clinic of Surgery (II), 700111 Iasi, Romania
8. Department of Medical Sciences I, Cardiology, Faculty of Medicine, University of Medicine and Pharmacy “Grigore T. Popa”, 700115 Iasi, Romania