ZHANG, Jiahong. Cox Regression Model with Time-varying Coefficients Applied to Survival Estimation of Heart Failure. Science and Technology of Engineering, Chemistry and Environmental Protection, [S. l.], v. 2, n. 5, p. 4012, 2024. DOI: 10.61173/sgz20437. Disponível em: https://stecep.deanfrancis.press/article/view/1608. Acesso em: 4 nov. 2026.