Holt VL, Martin DP, LoGerfo JP. Correlates and effect of non-response in a postpartum survey of obstetrical care quality. J Clin Epidemiol. 1997 Oct;50(10):1117-22.
Holt VL, Martin DP, LoGerfo JP. Correlates and effect of non-response in a postpartum survey of obstetrical care quality. J Clin Epidemiol. 1997 Oct;50(10):1117-22.