A tryptophan-rich breakfast and exposure to light with low color temperature at night improve sleep and salivary melatonin level in Japanese students

by Kai Wada, Shota Yata, Osami Akimitsu, Milada Krejci, Teruki Noji, Miyo Nakade, Hitomi Takeuchi, Tetsuo Harada
Published 2013-05-01