HD 7/2/17. - Green in Sherpa: Author's Pre-print: green tick author can archive pre-print (ie pre-refereeing) Author's Post-print: green tick author can archive post-print (ie final draft post-refereeing) Publisher's Version/PDF: cross author cannot archive publisher's version/PDF General Conditions: On author's personal website, institutional website or funder's website, including PubMed Central Non-commercial use only Publisher copyright and source must be acknowledged Author's version can be used Publisher's version/PDF cannot be used. - (file attached is the authors copy of the publisher version, Requested accepted v. (Catherine), Feb 2017-MMM