Huang Zhiqiang Abdominal surgery 并列题名：Huang Zhiqiang Abdominal surgery Qian Li abdominal surgery Practice of abdominal surgery 并列题名：Qian Li abdominal surgery Practice of Abdominal Surgery Operative techniques in abdominal surgery 并列题名：Practice of abdominal surgery Navigating spinal surgery Liang Linjiang's atlas of anorectal surgery