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Letter
Authors' response
- Correspondence to Professor Vidar Søyseth, Medical Division, Akershus University Hospital, Sykehusvn 25, Lørenskog 1478, Norway; vidar.soyseth{at}medisin.uio.no
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Publication history
- Accepted February 24, 2012
- First published April 1, 2012.
Online issue publication
April 27, 2016
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© 2012, Published by the BMJ Publishing Group Limited. For permission to use (where not already granted under a licence) please go to http://group.bmj.com/group/rights-licensing/permissions.