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Error in Figures 3 and 4

Posted by krjonscher on 27 Apr 2016 at 14:15 GMT

Please note that an error has been made in the published version of this paper. Figures 3 and 4 were switched and S1 Fig is incorrect and should be a retinol spectrum. A correction is in process and will be published. I am sorry if this has led to any confusion.

No competing interests declared.