1x Vagus Nerve Stimulation (VNS) Market Size, Share & Trends Analysis Report by Product (Implantable VNS Device, External VNS Device) by Application (Epilepsy, Depression, Migraine) by Biomaterial (Metallic, Ceramic, Polymeric) by End Use (Hospitals, Neurology Clinics, Ambulatory Surgical Centers, Research Centers) by Region (North America, Europe, Asia Pacific, Latin America, Middle East & Africa) - Global Industry Assessment (2018 - 2023) & Forecast (2024 - 2032)