Biomarker Research Services Market by Service Type (Biomarker Research Services, and CDx Research Services), By Disease Indication (Oncology, Cardiovascular Disorder, Infectious Disease, Neurological Disorder, Immunological Disorder, and Others), By End User (Hospitals, Specialty Clinics, and Diagnostic Centers) and By Region (North America, Latin America, Europe, Asia Pacific, the Middle East, and Africa) - Size, Share, Outlook, and Opportunity Analysis, 2018-2026