RT Journal Article SR Electronic T1 What are network meta-analyses (NMAs)? A primer with four tips for clinicians who read NMAs and who perform them (methods matter series) JF British Journal of Sports Medicine JO Br J Sports Med FD BMJ Publishing Group Ltd and British Association of Sport and Exercise Medicine SP 520 OP 521 DO 10.1136/bjsports-2020-102872 VO 55 IS 10 A1 Amin Doosti-Irani A1 Maryam Nazemipour A1 Mohammad Ali Mansournia YR 2021 UL http://bjsm.bmj.com/content/55/10/520.abstract AB