Suryanegara, Wiradi, and Wendy Hendrika. “The Relationship Between Physical Activity and Body Mass Index During the Covid-19 Pandemic in Students of the Faculty of Medicine, Indonesian Christian University”. Journal of Drug Delivery and Therapeutics, vol. 13, no. 11, Nov. 2023, pp. 144-8, https://doi.org/10.22270/jddt.v13i11.6034.