1. Department of Infectious Diseases, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
2. “Matei Bals” National Institute of Infectious Diseases, 021105 Bucharest, Romania
3. Department of Internal, Family and Occupational Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
4. Department of Pathophysiology, Faculty of Medicine, “Carol Davila” University of Medicine and Pharmacy, 050474 Bucharest, Romania
5. Romania Clinical Research Unit RECIF (Reseau d’Epidemiologie Clinique International Francophone), 020125 Bucharest, Romania