Peptic Ulcer Drugs Market Size, Share & COVID-19 Impact Analysis, By Drugs Type (Proton Pump Inhibitor (PPI), H2 Antagonists, Antibiotics, and Others), By Ulcer Type (Gastric Ulcer and Duodenal Ulcer), By Distribution Channel (Hospital Pharmacies, Retail Pharmacies, and Online Pharmacies), and Regional Forecast, 2020-2027