MATTHEWS, J.J., DOLAN, E., SWINTON, P.A., SANTOS, L., ARTIOLI, G.G., TURNER, M.D., ELLIOTT-SALE, K.J. and SALE, C. 2020. The effect of carnosine or β-alanine supplementation on markers of glycaemic control and insulin resistance in human and animal studies: a protocol for a systematic review and meta-analysis. [Protocol]. Systematic reviews [online], 9, article ID 282. Available from: https://doi.org/10.1186/s13643-020-01539-8