Influenza Medication Market Size, Share, Trends & Industry Analysis, By Treatment (Baloxavir marboxil, Oseltamivir phosphate, Others), By Influenza Type (Influenza A, Influenza B), By Route of Administration (Oral, Others), By Distribution Channel (Hospitals Pharmacies, Retail Pharmacies, Online Pharmacies, Others) and Regional Forecast, 2019-2032