Authors
S. Ramadan
Department of Propedeutics of Internal Diseases, Faculty of Medicine, Medical University - Pleven, Bulgaria
I. Yordanova
Department of Dermatology, Venereology and Allergology, Faculty of Medicine, Medical University - Pleven, Bulgaria
E. Simeonov
Department of Orthopedics and Traumatology, Faculty of Medicine, Medical University - Pleven, Bulgaria
