University of Alabama
United States
University of Belgrade
Serbia
UMass Memorial Medical Center
United States
Harvard Medical School
United States
University of Minnesota
United States
Fudan University
China
Ayursundra Superspeciality Hospital
India
University Hospital Lozenetz
Bulgaria
Azienda Ospedaliero-Universitaria di Parma
Italy
Columbia Asia Hospital
India
Affiliated Hospital of Nantong University
China
Banha University Hospital
Egypt
Hainan Provincial General Hospital
China
The 8th Medical Center of the General Hospital of Chinese People's Liberation Arm
China
Menoufia University
Egypt
University of Athens
Greece
Ovidius University
Romania