More than Decision Support: Exploring Patients' Longitudinal Usage of Large Language Models in Real-World Healthcare-Seeking Journeys. - Yancheng Cao; Yishu Ji; Chris Yue Fu; Sahiti Dharmavaram; Meghan Turchioe; Natalie C. Benda; Lena Mamykina; Yuling Sun; Xuhai Xu (CHI, 2026)