A. F. Muzakkir, Y. A. T. Padang, P. Kabo, A. A. Mappahya, and A. A. Zainuddin, “Predischarge Lung Ultrasound B-Lines as a Robust Predictor of 90-Day Rehospitalization in Heart Failure with Reduced Ejection Fraction (HFrEF): Evidence from Clinical and Classification and Regression Tree (CART)-Based Risk Stratification”, ijc, vol. 47, no. 3, pp. 310–324, July 2026.