Authors’ contributions
All authors conceptualized the work, commented on the work and approved it for submission. MA, IB, AB, BB, MG, EG, SJ, HJ, DL, AMM, AP, ES, DW searched for studies, extracted data and performed risk of biased analysis. BM and CaR did dual review, cleaning and formatting data extracted and risk of biased assessment. CaR, AS, IS and GdT solved conflicts relating to studies inclusion, data summaries and risk of biased assessment. DC and RP provided methodological guidance. CrR performed the data analysis. CaR and AS and drafted the review.