1. Department of Community Health, Institute of Medical Technology, Middle Technical University Baghdad, Iraq, --- Select a Country ---
2. College of Veterinary Medicine, Tuskegee University, Tuskegee AL36088, U.S.A., --- Select a Country ---
3. Department of Biology and Center for Cancer Research, Tuskegee University, Tuskegee, AL36088, U.S.A., --- Select a Country ---