MA 6/12/16. White in Sherpa: uthor's Pre-print: cross author cannot archive pre-print (ie pre-refereeing) Author's Post-print: grey tick subject to Restrictions below, author can archive post-print (ie final draft post-refereeing) Restrictions: If funded by National Institute of Health (NIH) 12 months embargo Publisher's Version/PDF: cross author cannot archive publisher's version/PDF General Conditions: NIH authors may deposit in PubMed Central after 12 months Publisher's version/PDF cannot be used. Must link to publisher version Full text added to dark upload for ERA LL 19/3/18