Umbilical Cord Mesenchymal Stem Cells Secretome in Osteoarthritis Patients: A Case Report . Gema Lingkung Kesehatan [Internet]. 2025 Dec. 22 [cited 2026 Feb. 11];23(4):600-4. Available from: https://gelinkes.poltekkes-surabaya.ac.id/index.php/gelinkes/article/view/245