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- [4] CHORIONIC VILLUS SAMPLING IN THE 1ST TRIMESTER - EXPERIENCES OF THE 1ST 2 YEARS ZENTRALBLATT FUR GYNAKOLOGIE, 1988, 110 (14): : 872 - 876
- [6] CHORIONIC VILLUS SAMPLING AND 1ST TRIMESTER FETAL DIAGNOSIS IN THE FAR-EAST ADVANCES IN GYNECOLOGY AND OBSTETRICS SERIES, VOL 2: FETAL PHYSIOLOGY AND PATHOLOGY, 1989, : 61 - 64
- [8] DOWN SYNDROME AT BIRTH NOT DETECTED BY 1ST-TRIMESTER CHORIONIC VILLUS SAMPLING AMERICAN JOURNAL OF MEDICAL GENETICS, 1989, 34 (04): : 606 - 607