Global Digital Companion Diagnostics Market By Type (Polymerase Chain Reaction (PCR) , Immunohistochemistry (IHC) , In Situ Hybridization (ISH) , and Next Generation Sequencing (NGS)), By Application (Hospitals , Pharmaceutical Companies , Laboratories , and Other), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029