- Address correspondence and reprint requests to Sandra M.E. Geurts, MSc, Department of Epidemiology, Biostatistics, and HTA, Radboud University Nijmegen Medical Centre, PO Box 9101, 6500 HB Nijmegen, The Netherlands. E-mail: .
- Received December 13, 2010
- First published April 1, 2011.
If you wish to reuse any or all of this article please use the link below which will take you to the Copyright Clearance Center’s RightsLink service. You will be able to get a quick price and instant permission to reuse the content in many different ways.