Harahap, N. S., & Amelia, R. (2019). Red Dragon Fruit (Hylocereus Polyrhizus) Extract Decreases Lactic Acid Level and Creatine Kinase Activity in Rats Receiving Heavy Physical Exercise. Open Access Macedonian Journal of Medical Sciences, 7(14), 2232–2235. https://doi.org/10.3889/oamjms.2019.626