Integration of the systemic inflammatory response index with pulse pressure enhances prognostication of cardiovascular mortality in the general population of the United States: insights from the NHANES database - An, Jie; Zhong, Zikan; Xiong, Bingquan; Yang, Dandan; Li, Youquan; Luo, Ya; Li, Hao; Jiao, Yang; Zhou, Genqing; Xu, Min; Liu, Shaowen; Li, Jie (Frontiers in Cardiovascular Medicine, 2024)