Analysis of unintended events in hospitals: inter-rater reliability of constructing causal trees and classifying root causes.

Smits, M., Janssen, J., Vet, R. de, Zwaan, L., Timmermans, D., Groenewegen, P., Wagner, C. Analysis of unintended events in hospitals: inter-rater reliability of constructing causal trees and classifying root causes. International Journal for Quality in Health Care: 2009, 21(4), 292-300