Dr. Tsvetin Trifonov Genadiev, Associate professor of Urology, Vita Hospital, Sofia, Bulgaria
E-mail: genadievi@abv.bg

Dr. Seyyed Shamsadin Athari, Faculty of Veterinary Medicine, University of Urmia, Iran
E-mail: ss.athari@gmail.com

Dr. Behzad Foroutan, Department of Pharmacology, School of Medicine, Shahroud University of Medical Sciences, Haft-e Tir Squire, Shahroud, Iran
E-mail: behzad_foroutan@hotmail.com