Erfin, Muhammad, et al. “Correlation of Serum IL-6 Levels With Muscle Mass, Muscle Strength, and Physical Performance in Elderly Gymnastics Community in Mohammad Hoesin General Hospital Palembang”. Bioscientia Medicina : Journal of Biomedicine and Translational Research, vol. 5, no. 9, May 2021, pp. 862-70, https://doi.org/10.32539/bsm.v5i9.351.