Statement是在文章末尾具体说明每一位作者对本文的贡献,包括未达到作者署名标准的贡献者。下面是一个实例:JL and LQ are joint first authors. LL and ZC obtained funding. LL, ZC, and JC designed the study. YG, ZB, JD, PG, ZT, WH, YL, and ZC collected the data. LY and YC were involved in data cleaning, mortality follow-up, and verification. JL, CY, and DS analyzed the data. JL drafted the manuscript. LQ and LL contributed to the interpretation of the results and critical revision of the manuscript for important intellectual content and approved the final version of the manuscript. All authors have read and approved the final manuscript. LL and ZC are the study guarantors.