Relative age within the school year and diagnosis of attention-deficit hyperactivity disorder: a nationwide population-based studyTools Sayal, Kapil and Chudal, Roshan and Hinkka-Yli-Salomäki, Susanna and Joelsson, Petteri and Sourander, Andre (2017) Relative age within the school year and diagnosis of attention-deficit hyperactivity disorder: a nationwide population-based study. Lancet Psychiatry, 4 (11). pp. 868-875. ISSN 2215-0374 Full text not available from this repository.AbstractBackground
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