Predicting Mortality and Readmission in Obstructive Sleep Apnea via LLM-Expanded Clinical Concepts. - Awwal Ahmed; Anthony Rispoli; Carrie Wasieloski; Ifrah Khurram; Rafael Zamora-Resendiz; Destinee Morrow; Aijuan Dong; Silvia Crivelli (Big Data Cogn. Comput., 2026)