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Associated factors of behavioural problems in children at preschool age: the Hokkaido study on environment and children's health |
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| Authors: | M. Minatoya S. Itoh A. Araki N. Tamura K. Yamazaki S. Nishihara C. Miyashita R. Kishi |
| Affiliation: | Center for Environmental and Health Sciences, Sapporo, Japan |
| Abstract: | |
| Keywords: | preschool children prospective study SDQ socio‐economic status |