- Correspondence to HPA Scheepers, Department of Health Care Inspectorate, Ministry of Health, Welfare and Sport, Stadsplateau, Utrecht 3521 AZ, The Netherlands;
- Received 1 May 2015
- Revised 22 September 2015
- Accepted 25 September 2015
- Published in print 1 January 2016.
- Published online 27 December 2015.
- Published first 12 October 2015.
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