“Umbilical Cord Mesenchymal Stem Cells Secretome in Osteoarthritis Patients: A Case Report ”. Gema Lingkungan Kesehatan 23, no. 4 (August 24, 2026): 600–604. Accessed September 13, 2026. https://gelinkes.poltekkesdepkes-sby.ac.id/index.php/gelinkes/article/view/245.