Wiley, BJOG: An International Journal of Obstetrics and Gynaecology, 8(109), p. 894-899, 2002
DOI: 10.1111/j.1471-0528.2002.01197.x
Wiley, BJOG: An International Journal of Obstetrics and Gynaecology, 8(109), p. 894-899
DOI: 10.1016/s1470-0328(02)01197-7
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