Sohrabi, M.-R., E. Davoudi-Monfared, B. Tayefi, Z. Hajihashemi, and E. Sajjadi. “The Effect of Regular Physical Activity on Exercise Tolerance: A School-Based Intervention”. Novelty in Biomedicine, vol. 1, no. 2, Nov. 2013, pp. 34-38, doi:10.22037/nbm.v1i2.5240.