Gastrointestinal Stent Market Size and Share Analysis by Product (Biliary, Duodenal, Colonic, Pancreatic, Esophageal), Application (Biliary Diseases, Colorectal Cancer, Stomach Cancer, Esophageal Cancer, Pancreatic Cancer, Duodenum Cancer), Material (SEMSs, SEPSs, Semirigid), Type (Bare-Metal Stents, Drug-Eluting Stents), End User (Hospitals and Clinics, Ambulatory Surgical Centers) - Global Industry Demand Forecast to 2030