Fediani, Y., M. Dewi, M. Irfannuddin, M. Saleh, and S. Dhaini. “The Effect of Regular Aerobic Exercise on Urinary Brain-Derived Neurotrophic Factor in Children”. Paediatrica Indonesiana, Vol. 54, no. 6, Dec. 2014, pp. 351-7, doi:10.14238/pi54.6.2014.351-7.