Itoh, MarikoKobayashi, SumitakaNishihara, ShinkichiMiyashita, ChihiroYamazaki, KeikoTamura, NaomiSuyama, SatoshiIkeda, AtsukoItoh, SachikoAit Bamai, YuYamaguchi, TakeshiMasuda, HideyukiHanley, SharonKishi, Reiko2025-03-252025-03-252024-12Itoh, M, Kobayashi, S, Nishihara, S, Miyashita, C, Yamazaki, K, Tamura, N, Suyama, S, Ikeda, A, Itoh, S, Ait Bamai, Y, Yamaguchi, T, Masuda, H, Hanley, S & Kishi, R 2024, 'Association between prenatal tobacco exposure and attention-deficit/hyperactivity disorder related characteristics at 6 and 8 years : A birth cohort in Japan', BMJ Open, vol. 14, no. 12, e087406. https://doi.org/10.1136/bmjopen-2024-0874062044-6055ORCID: /0000-0002-7554-004X/work/181280716https://hdl.handle.net/2164/25199Acknowledgements We are deeply grateful to the participating mothers and infants and the staff at the 37 hospitals in Hokkaido, Japan, for their cooperation in this study. We also thank Dr. Hiroyoshi Iwata at the Center for Environmental and Health Sciences of Hokkaido University for his advice in making the submission.10664691engSDG 3 - Good Health and Well-beingDevelopmental neurology & neurodisabilityEPIDEMIOLOGIC STUDIESPregnancyTobacco UseR MedicineGeneral MedicineSupplementary DataDASRJournal article10.1136/bmjopen-2024-087406http://www.scopus.com/inward/record.url?scp=85213916830&partnerID=8YFLogxK1412