[1] Univ New S Wales, Fac Med, Ctr Clin Governance Res, Sydney, NSW 2052, Australia
[2] Univ Chicago, Dept Med, Chicago, IL 60637 USA
[3] Univ Utrecht, Patient Safety Ctr, UMC Utrecht, Utrecht, Netherlands
[4] Univ Stavanger, Dept Hlth Studies, Stavanger, Norway
[5] Radboud Univ Nijmegen, Med Ctr, Sci Inst Qual Healthcare IQ Healthcare, NL-6525 ED Nijmegen, Netherlands
[6] UMC Utrecht, Dept Anesthesiol, Utrecht, Netherlands