Metabolism Drugs Market Size and Forecasts (2021 - 2031), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage: By Therapy Type (Enzyme Replacement Therapy, Substrate Reduction Therapy, Small Molecule Drugs, Others); Application (Glycogen Metabolism Disease, Lipid Metabolism Disease, Amino Acid Metabolism Disease, Others); Distribution Channel (Hospital Pharmacies, Retail Pharmacies, Online Pharmacies) , and Geography (North America, Europe, Asia Pacific, and South and Central America)