@article{Hitomi201542 title = "Intervention Study to Improve Meal Habit, Sleep Habit, Circadian Typology And School Marks in Japanese Elementary School Students", journal = "Journal of Sleep and Sleep Disorder Research", volume = "1", number = "1", pages = "42 - 54", year = "2015", note = "", issn = "2574-4518", doi = "https://doi.org/10.14302/issn.2574-4518.jsdr-16-1413", url = "https://openaccesspub.orgjsdr/article/516", author = "Takeuchi Hitomi and Nakao Mizuka and Kurose Wataru and Kawada Takahiro and Noji Teruki and Nakade Miyo and Tsuji Fujiko and Krejci Mirada and Harada Tetsuo", keywords = "academic achievement mark", keywords = "sleep habits", keywords = "circadian typology", keywords = "elementary school students", keywords = "critical hours of 9 hours for better mark" }