433
Ibid.
434
Robert Provine, «Yawning,» American Scientist 93 (2005): 532.
435
M-Pierre Perriol and Christelle Monaca, " 'One Person Yawning Sets Off Everyone Else', " Journal of Neurology, Neurosurgery, and Psychiatry 77 (2006): 3.
436
Alexa Tsoulis-Reay, «What It's Like to Need Hardly Any Sleep,» New York Magazine, March 1, 2015, .
437
Harrison Wein, «Gene Regulates Sleep Length,» NIH Research Matters, September 21, 2009, .
438
Rachel E. Gross, "To Edit the Human Genome Now Would Be 'Irresponsible', " Slate, December 3, 2015, http://www.slate.com.
439
Till Roenneberg, «Celebrate Sleep!» (panel with Arianna Huffington, Hans Ulrich Obrist, and Miriam Meckel, Digital-Life-Design Conference, Munich, Germany, January 19, 2016).
