Harnessing an Artificial Intelligence–Based Large Language Model With Personal Health Record Capability for Personalized Information Support in Postsurgery Myocardial Infarction: Descriptive Qualitative Study - Ting-ting Yang; Hong-xia Zheng; Sha Cao; Mei-ling Jing; Ju Hu; Yan Zuo; Qing-yong Chen; Jian-jun Zhang (Journal of Medical Internet Research)