Original ResearchPublished 12 October 2026Population aging and the spatial equity of prehospital emergency medical resources: evidence from Shanghai's five new townsXiaojian Zheng · Menglan Zhu · Xiaojun Tang · Zhibin Chen · Jianqiang He · Zhifeng ZhangFrontiers in Public Healthdoi 10.3389/fpubh.2026.1948408