Santosa, Mariani, et al. “The Effect of Moderate-Intensity Acute Aerobic Exercise Duration on the Percentage of Circulating CD31<sup>+< sup> Cells in Lymphocyte Population”. Medical Journal of Indonesia, vol. 25, no. 1, Apr. 2016, pp. 51-6, doi:10.13181/mji.v25i1.1277.