Authors: Leanne Jones; Mohammad Othman; Therese Dowswell; Zarko Alfirevic; Simon Gates; Mary Newburn; Susan Jordan; Tina Lavender; James P Neilson Journal: Cochrane Database Syst Rev Date: 2012-03-14
Authors: Allan M Cyna; Marion I Andrew; Jeffrey S Robinson; Caroline A Crowther; Peter Baghurst; Deborah Turnbull; Graham Wicks; Celia Whittle Journal: BMC Pregnancy Childbirth Date: 2006-03-05 Impact factor: 3.007