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Geographical variation in ADHD: do diagnoses reflect symptom levels?
Widding-Havneraas T, Markussen S, Elwert F, Lyhmann I, Bjelland I, Halmøy A, Chaulagain A, Ystrom E, Mykletun A, Zachrisson HD. Widding-Havneraas T, et al. Eur Child Adolesc Psychiatry. 2023 Sep;32(9):1795-1803. doi: 10.1007/s00787-022-01996-7. Epub 2022 May 18. Eur Child Adolesc Psychiatry. 2023. PMID: 35585272 Free PMC article.