Study Status: Enrolling by invitation
Recruit Status: Enrolling by invitation
Study Type: Interventional
Official Title: Treatment of Laryngotracheal Stenosis Using Autologous Olfactory-mucosa-derived Mesenchymal Stem Cells
Brief Summary: The trial evaluates the safety and efficacy of the olfactory mucosa-derived mesenchymal stem cells based therapy for the patients with chronic laryngeal and tracheal stenosis