supplementary materials.docx

Title: Chronotype and insomnia affect the testosterone levels with a sexual difference: a Mendelian randomization. Running head: Associations between habitual sleep and testosterone levels Authors: Zhongyu Jian^1,2†, Chi Yuan ^1†, Xi Jin^* †These authors have contributed equally to this work and share first authorship Affiliations of authors: 1 Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, Chengdu, Sichuan, P.R. China. 2 West China Biomedical Big Data Center, Sichuan University, Chengdu, Sichuan, P.R. China. *Corresponding author: Xi Jin, Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, Chengdu, 610041, China. Email: [e-mail]. Tel: [phone] Fax: [phone] Address: Department of Urology, Institute of Urology (Laboratory of Reconstructive Urology), West China Hospital, Sichuan University, No. 37 Guo Xue Xiang, Chengdu, Sichuan, 610041, P.R. China.