RT Journal Article SR Electronic T1 Network meta-analysis shows that prostaglandin inhibitors and nifedipine are best short-term tocolytics for preterm delivery JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 182 OP 183 DO 10.1136/eb-2012-101128 VO 18 IS 5 A1 Adi Abramovici A1 Sheri Jenkins YR 2013 UL http://ebm.bmj.com/content/18/5/182.abstract AB