Urban greening as a potential nature-based solution for heat-related health burden: Evidence from acute myocardial infarction in a megacity - Yuansong Zhuang; Zhen He; Dongyang Pan; Yakun Zhao; Yuxiong Chen; Yitao Han; Siqi Tang; Chenglin Li; Jinyan Lei; Otthein Herzog; Zhiqiang Wu; Zhongjie Fan (Sustainable Cities and Society, 2026)