Mansoura University, Egypt
Alzahra Cancer Centre, Dubai
Roswell Park Comprehensive Cancer Center, United States
Iraqi Board for Medical Specializations, Iraq
University of Tokyo, Japan
University of Belgrade, Serbia
University of Chieti, Italy
Day Surgery Clinic, Italy
Al-Zahra Hospitals, Dubai
University of Sharjah
Bulgarian Academy of Sciences,Bulgaria
Ghent University /VIB,Belgium
University Federico II Napoli, Italy
Institute of polish Mothers memorial Hospital in Lodz, Poland.
Institute of Polish Mothers Memorial Hospital, Lodz,Poland.