Harahap, Novita Sari, Nurhayati Simatupang, and Suprayitno Suprayitno. “The Effect of Physical Activity and Red Dragon Fruit (Hylocereus Polyrhizus) in Red Blood Cell and Hemoglobin in Trained People”. Open Access Macedonian Journal of Medical Sciences 9, no. A (January 10, 2021): 42–46. Accessed November 24, 2024. https://oamjms.eu/index.php/mjms/article/view/5590.