Umbilical Cord Mesenchymal Stem Cells Secretome in Osteoarthritis Patients: A Case Report . Gema Lingkung Kesehatan [Internet]. 2026 Aug. 24 [cited 2026 Sep. 13];23(4):600-4. Available from: https://gelinkes.poltekkesdepkes-sby.ac.id/index.php/gelinkes/article/view/245