//-->
Comparing the Contributions of Groups of Predictors: Which Outcomes Vary With Hospital Rather Than Patient Characteristics?
Silber, Jeffrey H., (1995)
Applications and Case Studies - Minimum Distance Matched Sampling With Fine Balance in an Observational Study of Treatment for Ovarian Cancer
Rosenbaum, Paul R., (2007)
Minimum distance matched sampling with fine balance in an observational study of treatment for ovarian cancer