Han, Ling, M. A. Pisani, K.L. B. Araujo, and Heather G. Allore. “Use of Self-Matching to Control for Stable Patient Characteristics While Addressing Time-Varying Confounding on Treatment Effect: A Case Study of Older Intensive Care Patients”. International Journal of Statistics in Medical Research 5, no. 1 (January 8, 2016): 8–16. Accessed April 28, 2024. https://www.lifescienceglobal.com/pms/index.php/ijsmr/article/view/3540.