Higginson, A.
Gray, R. J.
King, M.
Dance, R. J.
Williamson, S. D. R.
Butler, N. M. H.
Wilson, R.
Capdessus, R.
Armstrong, C.
Green, J. S.
Hawkes, S. J.
Martin, P.
Wei, W. Q.
Mirfayzi, S. R. http://orcid.org/0000-0003-4628-796X
Yuan, X. H.
Kar, S.
Borghesi, M.
Clarke, R. J.
Neely, D.
McKenna, P. http://orcid.org/0000-0001-8061-7091
Article History
Received: 21 August 2017
Accepted: 17 January 2018
First Online: 20 February 2018
Competing interests
: he authors declare no competing financial interests.