- Correspondence to Dr Annelien L Bredenoord, Julius Center for Health Sciences and Primary Care, University Medical Center Utrecht, Stratenum, 6.131, PO Box 85500, 3508 GA Utrecht, The Netherlands;
- Received April 29, 2010
- Revised September 13, 2010
- Accepted September 25, 2010
- First published November 11, 2010.
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