1. Pneumology Department, Mures Clinical County Hospital, 540142 Targu Mures, Romania
2. Pneumology Department, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mures, 540139 Targu Mures, Romania
3. Cardiology Department, Elias University Emergency Hospital, 011461 Bucharest, Romania
4. Faculty of Medicine, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mures, 540139 Targu Mures, Romania
5. Pathophysiology Department, George Emil Palade University of Medicine, Pharmacy, Science and Technology of Târgu Mures, 540139 Targu Mures, Romania