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Chronobiology International
The Journal of Biological and Medical Rhythm Research
Volume 33, 2016 - Issue 10
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Original Articles

Epidemiological study on chronotype among preschool children in Japan: Prevalence, sleep–wake patterns, and associated factors

Yuriko DoiDepartment of Health Promotion, National Institute of Public Health, Wako, JapanCorrespondence[email protected]
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,
Kaneyoshi IshiharaDepartment of Human Living Sciences, Notre Dame Seishin University, Okayama, JapanView further author information
&
Makoto UchiyamaDepartment of Psychiatry, Nihon University School of Medicine, Tokyo, JapanView further author information
Pages 1340-1350 | Received 31 May 2016, Accepted 22 Jul 2016, Published online: 18 Aug 2016

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