%0 Journal Article %T Can breakfast tryptophan and vitamin B6 intake and morning exposure to sunlight promote morning-typology in young children aged 2 to 6 years? %A Miyo Nakade %A Osami Akimitsu %A Kai Wada %A Milada Krejci %A Teruki Noji %A Nozomi Taniwaki %A Shigekazu Higuchi %A Hitomi Takeuchi %A Tetsuo Harada %J Journal of Physiological Anthropology %D 2012 %I BioMed Central %R 10.1186/1880-6805-31-11 %K Morningness-Eveningness %K Young children aged 2 to 6 years %K Tryptophan and vitamin B6 %K Breakfast %U http://www.jphysiolanthropol.com/content/31/1/11/abstract