[1] Heidelberg Univ, Mannheim, Germany
[2] Chinese Acad Med Sci & Peking Union Med Coll, Canc Hosp, Natl Clin Res Ctr Canc, Canc Hosp,Natl Canc Ctr, Beijing, Peoples R China
[3] Peking Univ Canc Hosp & Inst, Dept Radiol, Beijing, Peoples R China
[4] UMM Mannheim, Mannheim, Germany
[5] Huazhong Univ Sci & Technol, Tongji Hosp, Tongji Med Coll, Wuhan, Peoples R China
[6] Heidelberg Univ, Med Fac Mannheim, Dept Radiol & Nucl Med, Mannheim, Germany
[7] Ludwig Maximilians Univ Munchen, Univ Hosp, Dept Radiol, Munich, Germany
[8] Univ Antioquia, Dept Radiol & Gastrohepatol, Medellin, Colombia
[9] Univ Autonoma San Luis Potosi, San Luis Potosi, Mexico
[10] Inst Nacl Ciencias Med & Nutr Salvador Zubiran, Dept Radiol, Mexico City, Mexico
[11] Shanxi Prov Fenyang Hosp, Dept Oncol, Fenyang, Peoples R China
[12] Heidelberg Univ, Med Fac Mannheim, Heinrich Lanz Ctr Digital Hlth, Dept Stat Biomath & Informat Proc, Mannheim, Germany
[13] Univ Med Mannheim, Mannheim, Germany
[14] Klinikum Mannheim, Mannheim, Germany
[15] Peking Univ Canc Hosp & Inst, Gastrointestinal Canc Ctr, Unit 3, Beijing, Peoples R China