. 2016 Nov 16;89(1068):20160255. doi: 10.1259/bjr.20160255
© 2016 The Authors. Published by the British Institute of Radiology
This is an Open Access article distributed under the terms of the Creative Commons Attribution-NonCommercial 4.0 Unported License http://creativecommons.org/licenses/by-nc/4.0/, which permits unrestricted non-commercial reuse, provided the original author and source are credited.