RT Journal Article SR Electronic T1 Women who receive continuous support during labour have reduced risk of caesarean, instrumental delivery or need for analgesia compared with usual care JF Evidence Based Nursing JO Evid Based Nurs FD BMJ Publishing Group Ltd and RCN Publishing Company Ltd SP ebnurs-2011-100194 DO 10.1136/ebn.2011.100194 A1 Susan McDonald YR 2011 UL http://ebn.bmj.com/content/early/2011/09/25/ebn.2011.100194.abstract AB