RT Journal Article SR Electronic T1 Importance and methods of searching for E-publications ahead of print in systematic reviews JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 55 OP 59 DO 10.1136/ebmed-2015-110374 VO 21 IS 2 A1 Juliette Catherine Thompson A1 Joan Mary Quigley A1 Nicholas James Anthony Halfpenny A1 David Alexander Scott A1 Neil Stephen Hawkins YR 2016 UL http://ebm.bmj.com/content/21/2/55.abstract AB