1.
Yu J, Zhou H, Liu X, Zou F, Willke RJ. Adjusting Complex Heterogeneity in Treatment Assignment in Observational Studies. ijsmr [Internet]. 2014 May 14 [cited 2026 Jun. 15];3(2):203-14. Available from: https://pms.lifescienceglobal.com/index.php/ijsmr/article/view/1966