Virtual Clinical Trials Market Size, Share & Industry Analysis, By Study Design (Interventional, Observational, Expanded Access); By Indication (Oncology, Cardiovascular, CNS, Metabolic & Endocrine Disorders, Infectious Diseases, Others); By Phase (Phase I, Phase II, Phase III, Phase IV), By End User (Pharmaceutical & Biotechnology Companies, Contract Research Organizations, Others); By Region (North America, Europe, Asia-Pacific, Latin America, Middle East & Africa) – Share, Size, Outlook, and Opportunity Analysis, 2024-2031