McCarthy Fergus P, O'Brien Una, Kenny Louise C
The Irish Centre for Fetal and Neonatal Translational Research, University College Cork, Cork University Maternity Hospital, Wilton, Cork, Republic of Ireland Women's Health Academic Centre, King's Health Partners, St Thomas' Hospital, London
Parentcraft Department, Our Lady of Lourdes Hospital, Maternity Unit, Drogheda, Co Louth, Republic of Ireland.
BMJ. 2014 Oct 15;349:g5887. doi: 10.1136/bmj.g5887.