Pen Injectors Market: Industry Trends and Global Forecast, Till 2035 - Distribution By Type of Injector (Disposable and Reusable), Type of Needle Length (Short Needles (6mm), Medium Needles (6-12mm), Long Needles (>12mm)), Type of Dosage (Fixed and Variable), Type of Advanced Features (Dose-Adjustment Capabilities, Integrated Safety Mechanisms, Smart Pen Technology, and Connected Pen Devices), Type of Therapy, End User, Geographical Regions, and Leading Players