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_aSIIS _bspa |
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| 100 | 1 | _aSZABO, J. | |
| 245 | 1 | 0 | _aWHY CONFINE CHORIONIC VILLUS (PLACENTAL) BYOPSY TO THE FIRST TRIMESTER? |
| 650 | 1 | 4 | _aAnálisis clínicos |
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| 650 | 1 | 4 | _aEmbarazo |
| 653 | 1 | 0 | _aAcción social |
| 655 | 4 | _aDocumental | |
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_tTHE LANCET _gno. 8488 (1986), p. 1030 |
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