Application of double layered end-to-end anastomosis with continuous manual suture for completing digestive tract reconstruction in totally laparoscopic distal gastrectomy oleh XinSheng Zhang, WeiBin Zhang, MengLang Yuan, XiaoMeng Shi, HongYi Chen, Zhen Feng, ZiHao Chen, DunBo Liu, EnJun Yan, ShuangYi Ren