AUTHOR=Lu Jing , Ma Zhen , Zhang Xiaoxue , Zhong Wenhao , Zou Yunzeng , Yuan Jie TITLE=Association of serum iron with all-cause mortality and cardiovascular mortality in the cardiovascular patients: a retrospective cohort study based on the NHANES 1999–2018 JOURNAL=Frontiers in Cardiovascular Medicine VOLUME=11 YEAR=2024 URL=https://www.frontiersin.org/journals/cardiovascular-medicine/articles/10.3389/fcvm.2024.1414792 DOI=10.3389/fcvm.2024.1414792 ISSN=2297-055X