Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 323 Hospital of People's Liberation Army, Xi'an, Shaanxi 710054, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;
Department of General Surgery, 425 Hospital of People's Liberation Army, Sanya, Hainan 572008, China;