Short sleep duration and the risk of nonalcoholic fatty liver disease/metabolic associated fatty liver disease: a systematic review and meta-analysis.

"Declarations Ethical approvalAll procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. Conflict of interestThe authors declare no competing interests. Conflict of interest The authors declare no competing interests."

"Funding This work was supported by National Natural Science Foundation of China (81900272, 81825003, 91957123), National Key R&D Program of China (2020YFC2004705), Research Unit of Medical Science Research Management/Basic and Clinical Research of Metabolic Cardiovascular Diseases from Chinese Academy of Medical Sciences (2021RU003), and Beijing Nova Program from Beijing Municipal Science & Technology Commission (Z201100006820002) funding. The sponsor had no role in the design or conduct of this research."