1. Department of Epidemiology; “Grigore T. Popa” University of Medicine and Pharmacy, Faculty of Medicine; Iasi Romania
2. Department of Gastroenterology; “Grigore T. Popa” University of Medicine and Pharmacy, Faculty of Medicine; Iasi Romania
3. Faculty of Medicine, “Grigore T. Popa” University of Medicine and Pharmacy of Iasi; Romania
4. Department of Dermatology; Nicolina Medical Center; Iasi Romania
5. Apollonia University; Iasi Romania
6. Romanian Academy; “Petru Poni” Institute of Macromolecular Chemistry; Iasi Romania
7. “Nicolae Testemitanu” State University of Medicine and Pharmacy; Department of Dermatovenereology; Kishinev Republic of Moldova