Objective：To evaluate the value of antibiotic prophylaxis in cholecys tectomy.
Objective：To evaluate the value of antibiotic prophylaxis in cholecys tectomy.
目的：探讨胆囊切除术预防性应用抗生素的价值。
Objective：To evaluate the value of antibiotic prophylaxis in cholecys tectomy.
目的：探讨胆囊切除术预防性应用抗生素的价值。