超声监测孕11~14周脐带入口的临床价值

李雪艳，于松

Clinical Effectiveness of Application of Ultrasound in Monitoring Umbilical Cord Insertion at the 11

LI Xue-yan, YU Song

中国医疗设备 . 2015, (8): 35 -38 . DOI: 10.3969/j.issn.1674-1633.2015.08.011