Mediation Effect of Relaxin in Cerebrospinal Fluid on the Association Between Smoking and Sleep - Zeping Xu; Mingwei Ma; Yanlong Liu; Jiayi Tang; Xingguang Luo; Yu-Hsin Chen; Kexin Wang; Xiyi Chen; Yimin Kang; Ke Zheng; Weiming Hu; Li Chen; et al. (Nature and Science of Sleep, 2025)