Esophageal Squamous Cell Carcinoma

• Ankang Central Hospital — Ankang, Shaanxi, China
• Xijing Hospital of Digestive Diseases — Xi'an, Shaanxi, China
• Air Force 986 Hospital — Xi'an, Shaanxi, China
• Xi'an International Medical Center Hospital — Xi'an, Shaanxi, China

• Ruijin Hospital, Shanghai Jiao Tong University School of Medicine — Shanghai, Shanghai Municipality, China
• Ruijin Hospital, Shanghai JiaoTong University School of Medicine — Shanghai, Shanghai Municipality, China

• Tianjin Cancer Hospital — Tianjin, Tianjin Municipality, China

Not specified

• Peking Union Medical College Hospital — Beijing, Beijing Municipality, China

• Chinese Peiple's Liberation Army No.82 Hospital — Huai'an, Jiangsu, China
• Huai'an second peiple's Hospital — Huai'an, Jiangsu, China
• Lianshui County Peoples Hospital — Huai'an, Jiangsu, China
• xuyi peiple's Hospital — Xucheng, Jiangsu, China

• Beijing Cancer Hospital — Beijing, Beijing Municipality, China

• Fudan Universtiy Shanghai Cancer Center — Shanghai, Shanghai Municipality, China

• Ruijin Hospital, Shanghai JiaoTong University School of Medicine — Shanghai, Shanghai Municipality, China

• Mian Xi — Guangzhou, Guangdong, China