Wake Forest University
USA
Ehime University
Japan
Ain Shams University
Egypt
University of Cincinnati Medical Center
Tygerberg Hospital
South Africa
Centro Hospitalar Médio Ave (CHMA)
Spain
Bowen University
Nigeria
Cairo University
Feofaniya Clinic Hospital
Ukraine
Mahatma Gandhi Medical College and Research Institute
India
BPS Govt. Medical College for Women
Hamdard Institute of Medical Sciences and Research
Assiut University Hospital