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Grimes DA
,Smith MS
,Witham AD
BJOG: An International Journal of Obstetrics and Gynaecology, Feb 2004 ...read moreOsathanondh R
,Donnenfeld AE
,Frigoletto FD Jr.
,Driscoll SG
,Ryan KJ
Obstetrics & Gynecology, Nov 1980 ...read more