Weickhardt, A J
Williams, D S
Lee, C K
Chionh, F
Simes, J
Murone, C
Wilson, K
Parry, M M
Asadi, K
Scott, A M
Punt, C J A
Nagtegaal, I D
Price, T J
Mariadason, J M
Tebbutt, N C
Article History
Revised: 12 March 2015
Accepted: 14 May 2015
First Online: 30 June 2015
Competing interests
: Dr Tebbutt has received honoraria and worked in a consulting role for Roche. Dr Price has been an uncompensated member of Roche advisory boards. The other authors declare no conflict of interest.