Rasmussen , F., V. R. Sara, and K.-H. Gustavson. “Serum Levels of Radioreceptor-Assayable Somatomedins in Children With Minor Neurodevelopmental Disorders”. Upsala Journal of Medical Sciences, vol. 88, no. 2, June 1983, pp. 121-6, doi:10.3109/03009738309178445.