The mentioned paper, titled "Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness", is here: http://ww

The mentioned paper, titled "Evening use of light-emitting eReaders negatively affects sleep, circadian timing, and next-morning alertness", is here: http://www.pnas.org/content/early/2014/12/18/1418490112.abstract http://www.pnas.org/content/early/2014/12/18/1418490112.abst... http://www.pnas.org/content/early/2014/12/18/1418490112.full.pdf+html?with-ds=yes http://www.pnas.org/content/early/2014/12/18/1418490112.full...