Green in Sherpa: Author's Pre-print: author can archive pre-print (ie pre-refereeing)
Author's Post-print: 	author can archive post-print (ie final draft post-refereeing)
Publisher's Version/PDF: author can archive publisher's version/PDF
General Conditions: 	
    Authors retain copyright
    Published source must be acknowledged and DOI cited
    Must link to publisher version
    Publisher's version/PDF may be used
    On author's personal website, institutional repository or open access repository
    The publisher will automatically deposit articles in PubMed Central
    Creative Commons Attribution License 4.0
    Creative Commons Attribution Non-Commercial No Derivatives License and Creative Commons Attribution Non-Commercial Share Alike License available on request. -  21.3.16--MMM.  -- Added Additional Info. linking to main work, 13.9.17-MMM