Lippincott, Williams & Wilkins, Obstetrics & Gynecology, 2(98), p. 284-288, 2001
DOI: 10.1097/00006250-200108000-00018
Lippincott, Williams & Wilkins, Obstetrics & Gynecology, 2(98), p. 284-288, 2001
DOI: 10.1016/s0029-7844(01)01441-7
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