Using Large Language Model for Efficient Extraction of Treatment Discontinuation Information - A Study of Online Breast Cancer Community Posts. - Qingyuan Song; Jessie Yang; Ndidiamaka Obi; Congning Ni; Jeremy L. Warner; Qingxia Chen; Lijun Song; S. Trent Rosenbloom; Bradley A. Malin; Zhijun Yin (AIME (2), 2025)