National Taiwan University Hospital, Taipei, Taiwan
Ain Shams University, Cairo, Egypt
University of Wisconsin - River Falls, River Falls, Wisconsin, United States
Dentistry Faculty, Medellin, Antioquia, Colombia
Hospital Alvaro Cunqueiro, Vigo, Pontevedra, Spain
Ankara Bilkent City Hospital, Ankara, None Selected, Turkey
Cancer Hospital, Chinese Academyof Medical Sciences, Beijing, Beijing, China
Peking University People's Hospital, Beijing, Beijing, China
Fujian Medical University Affiliated Union Hospital, Fuzhou, Fujian, China
HCL - Renée Sabran Hospital, Hyères, France