Healthcare Middleware Market, By Type (Communication Middleware, Integration Middleware, and Platform Middleware), By Deployment Model (On-premises Middleware and Cloud-based Middleware), By Application (Clinical Middleware, Administrative Middleware, Financial Middleware), By End User (Hospitals and Clinics, Ambulatory Care Centers, Diagnostic Centers, and Health Information Exchages (HIEs)), By Geography (North America, Latin America, Europe, Middle East & Africa, and Asia Pacific)