El, C., I. Huzmeli, E. Dogru Huzmeli, and F. Duman. “Evaluation of Cardiorespiratory State in Patients With Cerebral Palsy”. Annals of Medical Research, vol. 26, no. 3, May 2021, pp. 0447-51, http://www.annalsmedres.org/index.php/aomr/article/view/1328.