Reader Comments (3)

Post a new comment on this article

  • 1 Response
    26 Jan 2013
    14:36 GMT
    Most Recent
    Literature Posted by richardkolodziej on 25 Jan 2013 at 14:47 GMT
  • 0 Responses
    18 Jan 2013
    23:32 GMT
    Most Recent
    Media Coverage of This Article Posted by PLOS_ONE_Group on 18 Jan 2013 at 23:32 GMT