Authors
Angel M. Dzhambov
Department of Hygiene and Ecomedicine, Faculty of Public Health, Medical University of Plovdiv, Plovdiv, Bulgaria
Karamfil M. Bahchevanov
Department of Neurology, Faculty of Medicine, Medical University of Plovdiv, Bulgaria
Kostadin A. Chompalov
Department of Neurology, Faculty of Medicine, Medical University of Plovdiv, Bulgaria
Penka A. Atanassova
Department of Neurology, Faculty of Medicine, Medical University of Plovdiv, Bulgaria