Is relatively young age within a school year a risk factor for mental health problems and poor school performance? A population-based cross-sectional study of adolescents in Oslo, Norway
2008 ◽
Vol 36
(4)
◽
pp. 353-360
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2014 ◽
Vol 46
(2)
◽
pp. 281-288
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Keyword(s):
Keyword(s):
2021 ◽
Vol 8
(12)
◽
pp. 6047
Keyword(s):
Keyword(s):