Article info

Download PDFPDF
A source of tension


  1. Correspondence to Dr Helen Williams, Department of Radiology, Birmingham Childrens Hospital, Birmingham B4 6NH, UK; helen.williams{at}
View Full Text


Williams H
A source of tension

Publication history

  • Accepted February 27, 2017
  • First published May 3, 2017.
Online issue publication 
September 21, 2017

Article Versions

Request permissions

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.