Ethics approval and consent to participate
Crohn’s Disease
The study was approved by the Ethics Committee of Jinling Hospital, Medical School of Nanjing University (project title: Efficacy and Safety of Allogeneic Umbilical Cord-derived Mesenchymal Stem Cells for the Treatment of Complex Perianal Fistula in Crohn’s Disease; Approval Number: 2020DZWJWKT-003; date of approval: 31 August 2020).