Characterizing Parental Use of a HIPAA-Compliant Large Language Model Chatbot in Rare Pediatric Diseases: Insights from Think-Aloud Sessions. - Kerr AM; Bereitschaft C; Milam S; Rudloff J; Bryan M; Cohen-Cutler S; Zhao M; Gupta A; Lai AM; Sisk BA (Applied clinical informatics, 2026)