Authors
St. Valkanov
Department of Neurosurgery, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
P. Valkanov
Department of Neurosurgery, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
K. Trifonova
Department of Ophthalmology, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
K. Slaveykov
Department of General Medicine, Medical Faculty, Trakia University, Stara Zagora, Bulgaria
