Clark B A, Bissonnette J M, Olson S B, Magenis R E
Department of Obstetrics and Gynecology, Oregon Health Sciences University, Portland 97201.
Am J Obstet Gynecol. 1989 Aug;161(2):301-2. doi: 10.1016/0002-9378(89)90503-6.
Two previous reports have suggested that the pregnancy loss rate with chorionic villus biopsy is high in the initial 100 to 300 cases. In the initial 211 cases of this study, the total pregnancy loss rate (7.1%) and losses not attributed to induced abortion or cytogenetic abnormality (2.8%) do not support this contention.
此前有两份报告表明，在绒毛取样的最初100至300例病例中，流产率很高。在本研究的最初211例病例中，总流产率（7.1%）以及并非由人工流产或细胞遗传学异常导致的流产率（2.8%）并不支持这一观点。
