Authors: Peter Brocklehurst; Pollyanna Hardy; Jennifer Hollowell; Louise Linsell; Alison Macfarlane; Christine McCourt; Neil Marlow; Alison Miller; Mary Newburn; Stavros Petrou; David Puddicombe; Maggie Redshaw; Rachel Rowe; Jane Sandall; Louise Silverton; Mary Stewart Journal: BMJ Date: 2011-11-23
Authors: Sally K Tracy; Alec Welsh; Bev Hall; Donna Hartz; Anne Lainchbury; Andrew Bisits; Jan White; Mark B Tracy Journal: BMC Pregnancy Childbirth Date: 2014-01-24 Impact factor: 3.007