European Journal of Obstetrics & Gynecology and Reproductive Biology
Elsevier

肩难产的临床与超声检查危险因素及并发症——产次及孕龄相匹配的病例对照研究

Jukka Parantainen, Outi Palomäki, Nina Talola and Jukka Uotila

European Journal of Obstetrics & Gynecology and Re    2015-05-19

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