Oxytocin Receptor Inhibitors and β-receptor Agonist in the Treatment of Premature Delivery：a Meta-Analysis

YANG Guang-qiong;LONG Shu-yu;YANG Pei;YANG Xing-liang;LI Hua-feng

Journal of International Obstetrics and Gynecology . 2014, (6): 686 -691 .