O. A. Tokareva
Saint Petersburg State University of Veterinary Medicine
Russian Federation

 Olesya Al. Tokareva -  Candidate of Veterinary Science, Assoc. Prof 

 Saint Petersburg 

S. V. Engashev
Moscow State Academy of Veterinary Medicine and Biotechnology – MBA named after K.I. Skryabina
Russian Federation

 Sergey Vl. Engashev -  Dr. in Veterinary Science, Prof., Academician of the Russian Academy of Sciences 

 Moscow 

E. S. Engasheva
All-Russian Research Institute of Veterinary Sanitation, Hygiene and Ecology – Branch of the Federal State Budgetary Scientific Institution FSC VIEV RAS
Russian Federation

 Ekaterina S. Engasheva -  Dr. in Biological Sceince 

 Moscow 

A. N. Tokarev
Saint Petersburg State University of Veterinary Medicine
Russian Federation

 Anton N. Tokarev -  Dr. in Veterinary Science, Assoc. Prof 

 Saint Petersburg