00325nam a2200109Ia 4500008004100000040001100041100001800052245010400070260001400174300001600188300001100204251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn M. Grant 0aBritish Journal of Obstetrics & GynaecologybAn International Journal of Obstetrics and Gynaecology  cMay, 2000  aP. 579-1060  bV. 107