Powell, Craig M.
Article History
First Online: 13 September 2017
Change Date: 11 October 2017
Change Type: Correction
Change Details: This article originally omitted to mention that the author has declared competing financial interests.
Competing interests
: C.M.P. has accepted travel funds/honoraria to speak once at the following companies: Psychogenics; Astra-Zeneca; Roche; Pfizer; and Dainippon Sumitomo Pharma Co. He also has an investigator-initiated Novartis grant for clinical research. None of these relates to the current study.