Department of Gastrointestinal Surgery Department of Clinical Nutrition Beijing Shijitan Hospital Capital Medical University Beijing 100038 China;
Department of Gastrointestinal Surgery Department of Clinical Nutrition Beijing Shijitan Hospital Capital Medical University Beijing 100038 China;
Department of Gastrointestinal Surgery Department of Clinical Nutrition Beijing Shijitan Hospital Capital Medical University Beijing 100038 ChinaDepartment of Oncology Capital Medical University Beijing 100038 ChinaBeijing International Science and Technology Cooperation Base for Cancer Metabolism and Nutrition Beijing 100038 China;