Gene Therapy Market (4th Edition) by Therapeutic Approach (Gene Augmentation, Oncolytic Viral Therapy, Immunotherapy and Others), Type of Gene Therapy, Type of Vectors Used, Therapeutic Areas (Autoimmune Disorders, Cardiovascular Diseases, Genetic Disorders, Hematological Disorders, Metabolic Disorders, Muscle-related Diseases, Oncological Disorders, Ophthalmic Diseases and Others), Route of Administration, and Key Geographical Regions: Industry Trends and Global Forecasts, 2020-2030