Secretome Derived from Umbilical Cord Mesenchymal Stem Cells as a Therapeutic Approach for Osteoarthritis: Insights from In Vitro, In Vivo, and Clinical Evidence - Wahyu Widowati; Lydia Lydia; Gabriella Rumayauw J; Monica Permatasari Wijaya; Megan Caroline S. S; Jose Hady Putera; Merisa Noviliany Rachmad; Rizal Aziz; Rizky Pratama; Elnaz Zand (Cell Biochemistry and Biophysics, 2026)