H S Hansen, K Froberg, N Hyldebrandt, J R Nielsen
Hansen H S, Froberg K, Hyldebrandt N, Nielsen J R.
A controlled study of eight months of physical training and reduction of blood pressure in children: the Odense schoolchild study.
British Medical Journal 1991; 303 :682
doi:10.1136/bmj.303.6804.682