Diefenbach, ChristianeSchmidt, Martina F.Huss, MichaelKönig, JochemUrschitz, Michael S.The ikidS Study Group2022-11-212022-11-212022https://openscience.ub.uni-mainz.de/handle/20.500.12030/7629engCC-BY-4.0https://creativecommons.org/licenses/by/4.0/610 Medizin610 Medical sciencesAge at school entry and reported symptoms of attention-deficit/hyperactivity in first graders : results of the prospective cohort study ikidSZeitschriftenaufsatz