- Correspondence to Marianne K Dees, General Practitioner, Radboud University Nijmegen Medical Centre, Department of Primary and Community Care, Internal postal code 117, PO Box 9101, 6500 HB Nijmegen, The Netherlands;
- Received May 17, 2011
- Accepted July 4, 2011
- First published September 24, 2011.
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