Neoplasms, Squamous Cell

• Dana Farber Cancer Insitute — Boston, Massachusetts, United States

• Shanghai Chest Hospital — Shanghai, China

• Mashhad University of Medical Sciences — Mashhad, Razavi Khorasan Province, Iran

• Department of GI Oncology, Peking University Cancer Hospital, — Beijing, Beijing Municipality, China

• Jiangsu Provincial Cancer Hospital — Nanjing, Jiangsu, China

• Changhai hosipital — Shanghai, Shanghai Municipality, China

• Cancer Hospital, Chinese Academy of Medical Sciences/Peking Union Medical College — Beijing, Chaoyang, China

• Zhejiang Cancer Hospital — Hangzhou, Zhejiang, China

• The First Affiliated Hospital of Nanjing Medical University — Nanjing, China

Not specified