- Miss J Ubachs-Moust, Department of Health, Ethics & Society, School for Public Health and Primary Care (CAPHRI), Faculty of Health, Medicine and Life Sciences, Maastricht University, PO Box 616, 6200 MD Maastricht, The Netherlands;
- Received March 25, 2008
- Revised June 23, 2008
- Accepted July 2, 2008
- First published November 28, 2008.
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