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Young age at school entry and attention-deficit hyperactivity disorder-related symptoms during primary school: results of a prospective cohort study conducted at German Rudolf Steiner Schools

Crossref DOI link: https://doi.org/10.1136/bmjopen-2017-020820

Published Online: 2018-10-10

Published Print: 2018-10

Update policy: https://doi.org/10.1136/crossmarkpolicy

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