- Correspondence to Professor M A Verkerk, Department of Internal Medicine, University Medical Centre Groningen, P.O. Box 30001, 9700 RB Groningen, The Netherlands;
- Received August 27, 2013
- Revised March 21, 2014
- Accepted August 21, 2014
- First published September 10, 2014.
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.