Global Covid-19 Diagnostics Market by Product (PCR Kits, POC Kits and Immunoassay), Technology (Molecular and Immunoassay), and End User (Hospitals, Physician's office & urgent care clinics and Diagnostic Labs) - Market Research Report 2021 : Covid 19 Impact Outlook, Regional Analysis, Competitive Landscape, Growth Prospects & Forecast 2020-2026