Correlation between a low serum free triiodothyronine level and mortality of severe pulmonary tuberculosis patients.

"Declarations Ethics approval and consent to participateThis study was approved by the ethics committee of Hangzhou Red Cross Hospital. All 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. Written informed consent was obtained from all the study participants and their legal guardian/parent in the case of a minor participants. Consent for publicationNot applicable. Competing interestsThe authors declare no competing interests. Competing interests The authors declare no competing interests."

"Funding This work was supported by Zhejiang Medical Health Science and Technology Plan Project (2022KY983); Hangzhou Biomedical and Health Industry Development Support Science and Technology Special Project (Phase VI) (2022WJC053)."