Cabreiro, F., Au, C., Leung, K., Vergara-Irigaray, N., Cochemé, H., Noori, T., …Gems, D. (2013). Metformin retards aging in C. elegans by altering microbial folate and methionine metabolism. Cell, 153(1), 228-239. https://doi.org/10.1016/j.cell.2013.02.035