Sunlight and suicide risk: mediating effect of high temperature in China - Xiuya Xing; Yiming Gai; Qin He; Wenjun Cheng; Jingli Zhu; Qianyao Cheng; Yinguang Fan; Hong Su; Huadong Wang; Zhongliang Bai; Jian Cheng (International Journal of Biometeorology, 2026)