Exploring the influencing factors affecting the operational effectiveness of public health emergency response mechanism: a DEMATEL-ISM-MICMAC mixed methods study - Qunkai Wang; Nan Meng; Yunxia Ma; Yanping Wang; Kexin Wang; Ruiqian Zhuge; Yuxuan Wang; Peng Wang; Huan Liu; Qunhong Wu (BMC Public Health, 2025)