Email adress changed Mohamed O Ahmed, Department of Microbiology and Parasitology, Faculty of Veterinary Medicine, Al Fateh University 19 July 2011 The E-mail adress of the corresponding author has changed to a.mo@live.com Competing interests None declared
Email adress changed
19 July 2011
The E-mail adress of the corresponding author has changed to a.mo@live.com
Competing interests
None declared