Vitamin D Therapy Market Size and Forecasts (2020 - 2030), Global and Regional Share, Trends, and Growth Opportunity Analysis Report Coverage:by Route of Administration (Oral, Parenteral); Purchasing Pattern (Prescription Drugs, Over-The-Counter Drugs); Application (Osteoporosis, Rickets, Muscle Weakness, Autoimmune Disorders, Skin Diseases, Other Applications) and geography, and Geography (North America, Europe, Asia Pacific, and South and Central America)