Enhancement of the Performance of Large Language Models in Diabetes Education through Retrieval-Augmented Generation: Comparative Study - Dingqiao Wang; Jiangbo Liang; Jinguo Ye; Jingni Li; Jingpeng Li; Qikai Zhang; Qiuling Hu; Caineng Pan; Dongliang Wang; Zhong Liu; Wen Shi; Danli Shi; et al. (Journal of Medical Internet Research)