RT Journal Article SR Electronic T1 Meta-analysis using individual participant data from randomised trials: opportunities and limitations created by access to raw data JF Evidence Based Medicine JO Evid Based Med FD BMJ Publishing Group Ltd SP 157 OP 162 DO 10.1136/ebmed-2017-110775 VO 22 IS 5 A1 Ewelina RogoziƄska A1 Nadine Marlin A1 Shakila Thangaratinam A1 Khalid S Khan A1 Javier Zamora YR 2017 UL http://ebm.bmj.com/content/22/5/157.abstract AB