Abstract Background It remains unclear whether it is more detrimental to be born too early or too small in relation to symptoms of attention deficit/hyperactivity disorder (ADHD). Thus. we tested whether preterm birth and small body size at birth adjusted for gestational age are independently associated with symptoms of ADHD in children. Methods A longitudinal regional birth cohort st... https://www.fitnessgravesyardes.shop/product-category/mast-wire-harness/