Adriani, Donna, Yudhisman Imran, Martiem Mawi, Patwa Amani, and Ermita I.I. Ilyas. 2020. “Effect of Brain Gym ® Exercises on Cognitive Function and Brain-Derived Neurotrophic Factor Plasma Level in Elderly: a Randomized Controlled Trial”. Universa Medicina 39 (1):34-41. https://doi.org/10.18051/UnivMed.2020.v39.34-41.