1. WHO Collaborating Centre for Oral Health Care Planning and Future
Scenarios, University of Nijmegen, College of Dental Sciences, PO Box 9101, 6500 HB
Nijmegen, the Netherlands;
2. Department of Preventive and Community Dentistry and Paediatric
Dentistry, University of Nijmegen, College of Dental Sciences, PO Box 9101, 6500 HB
Nijmegen, the Netherlands; and
3. Department of Paediatric Dentistry, Academic Centre for Dentistry
Amsterdam -ACTA-, Louwesweg 1, 1066 EA Amsterdam, the Netherlands;