00343nam a2200109Ia 4500008004100000040001100041100001800052245010400070260003500174300001300209300001100222251112s9999||||xx |||||||||||||| ||und||  aCNCLSA  aJohn M. Grant 0aBritish Journal of Obstetrics & GynaecologybAn International Journal of Obstetrics and Gynaecology  c1988bAcademic PressaNew York  aP. 1-740  bV. 116