单纯硬膜外麻醉与腰硬联合麻醉用于妇产科剖宫产术后镇痛效果对比分析
단순경막외마취여요경연합마취용우부산과부궁산술후진통효과대비분석
And for combined spinal epidural anesthesia analgesia effect analysis of comparative obstetric cesarean section women single epidural anesthesia