title: Erratum to: Predictive value of serum HER2 ECD in patients with HER2-positive advanced gastric cancer treated with trastuzumab plus chemotherapy.
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Jun
authors.initials: J
authors.lastname: Zhou
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China. zhipeng3@hotmail.com.
authors.forename: Zhi
authors.initials: Z
authors.lastname: Peng
authors.affiliation: Translational Medicine Center, Laboratory of Oncology, Affiliated Hospital of Academy of Military Medical Sciences, Beijing, China.
authors.forename: Yi
authors.initials: Y
authors.lastname: Liu
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Jifang
authors.initials: J
authors.lastname: Gong
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Xiaotian
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Ming
authors.initials: M
authors.lastname: Lu
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Jing
authors.initials: J
authors.lastname: Gao
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Yili
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Yanyan
authors.initials: Y
authors.lastname: Li
authors.affiliation: Department of Gastrointestinal Oncology, Key Laboratory of Carcinogenesis and Translational Research (Ministry of Education), Peking University Cancer Hospital and Institute, FuCheng Road 52, HaiDian District, Beijing, 100142, China.
authors.forename: Lin
authors.initials: L
authors.lastname: Shen