第二产程直立位分娩实践方案的可行性研究
臧瑜,赵玲,张惠欣,孙克娟,陆虹
Journal of Hebei Medical College for Continuing Education . 2023, (4): 53 -60 .  DOI: 10.3969/j.issn.1674-490X.2023.04.009