Plasma Proteomic Signature of Frailty in 50,506 Adults Jia X, Gao W, Zhang J, Zhao Y, Zhang L, Cao X, Wu Y, Ma L, Chen L, Sun L, Guo H, Zhang C, Jylhävä J, Hu Z, Hagelin H, Hägg S, Hoogendijk EO, Liu Z. medRxiv 2025.06.13.25329572; doi: https://doi.org/10.1101/2025.06.13.25329572 https://www.medrxiv.org/content/10.1101/2025.06.13.25329572v1 Preprint Jun 13, 2025