Global Integrin Alpha 4 Market By Type (TE-5232 , ATL-1102 , Carotegrast , and ET-3764), By Application (Acute Ischemic Stroke , Celiac Disease , Epilepsy , Melanoma , Multiple Sclerosis , and Other), By Region, and Key Companies - Industry Segment Outlook, Market Assessment, Competition Scenario, Trends and Forecast 2020-2029