RT Journal Article SR Electronic T1 Delays in publishing systematic review registrations in PROSPERO are hindering transparency and may lead to research waste JF BMJ Evidence-Based Medicine JO BMJ EBM FD BMJ Publishing Group Ltd SP bmjebm-2020-111474 DO 10.1136/bmjebm-2020-111474 A1 Livia Puljak YR 2020 UL http://ebm.bmj.com/content/early/2020/07/14/bmjebm-2020-111474.abstract AB