Saitoh, S., Okano, S., Nohara, H., Nakano, H., Shirasawa, N., Naito, A., … Nakajima, O. 5-aminolevulinic acid (ALA) deficiency causes impaired glucose tolerance and insulin resistance coincident with an attenuation of mitochondrial function in aged mice. PloS One, 13(1), e0189593. https://doi.org/10.1371/journal.pone.0189593 (Original work published 2018)