Gianola S, Bargeri S, Del Castillo G, et al British Journal of Sports Medicine  Published Online First: 13 April 2021.  Abstract Objective To assess the effectiveness of interventions for acute and subacute non-specific low back pain (NS-LBP) based on pain and disability outcomes. Design A systematic review of the literature with network meta-analysis. Data sources Medline, Embase and CENTRAL databases were searched from inception until 17 October 2020. Eligibility criteria …