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- [4] Prothrombotic mutations as a risk factor for preterm birth LANCET, 1999, 353 (9162): : 1411 - 1412
- [9] The cervix: an independent risk factor for preterm birth PRENATAL AND NEONATAL MEDICINE, 1998, 3 (01): : 106 - 108
- [10] Bacterial vaginosis: not a risk factor for preterm birth? BRITISH JOURNAL OF GENERAL PRACTICE, 2004, 54 (504): : 547 - 547