Global Muscle Relaxant Drugs Market By Drug Type (Facial Muscle Relaxant Drugs, Skeletal Muscle Relaxant Drugs, and Neuromuscular Blocking Agents) and By Distribution Channel (Hospital Pharmacy, Retail Pharmacy, and Online Pharmacy)- Market Research Report 2021 : Covid 19 Impact Outlook, Regional Analysis, Competitive Landscape, Growth Prospects & Forecast 2020-2026