Li, X
Kelly, D
Nolan, J M
Dennison, J L
Beatty, S
Article History
Received: 24 June 2016
Accepted: 27 September 2016
First Online: 9 December 2016
Competing interests
: Professor John M Nolan and Professor Stephen Beatty do consultancy work for nutraceutical companies, in a personal capacity, and are directors of Nutrasight Consultancy Limited. The remaining authors declare no conflict of interest.