STEER P. <br/><br/>
BRITISH JOU OF OBST & GYNECOLOGY 

 -  BJOG  2013 
 - 1-505  42008 
 -  120 .
<br/><br/><label>ISSN: </label>14700328 
<br/><br/><label>Dewey Class. No.: </label>618.9205