Xie W, Zheng F. Robust Cox Regression as an Alternative Method to Estimate Adjusted Relative Risk in Prospective Studies with Common Outcomes. ijsmr [Internet]. 2016 Dec. 9 [cited 2025 Jan. 11];5(4):231-9. Available from: http://lifescienceglobalca.com/index.php/ijsmr/article/view/4262