Machine Learning–Based Text Analysis to Predict Severely Injured Patients in Emergency Medical Dispatch: Model Development and Validation - Kuan-Chen Chin; Yu-Chia Cheng; Jen-Tang Sun; Chih-Yen Ou; Chun-Hua Hu; Ming-Chi Tsai; Matthew Huei-Ming Ma; Wen-Chu Chiang; Albert Y Chen (Journal of Medical Internet Research, 2022)