The Medical Science Liaison (MSL) is a specialized role within the pharmaceutical, biotechnology, medical device, and related health-care fields. We concentrate on a specific therapeutic area or disease state (e.g., oncology, cardiology, gastroenterology, infectious diseases, rheumatology). MSLs establish and maintain relationships with leading physicians, researchers, and clinicians, referred to as key opinion leaders (KOLs) at academic institutions, hospitals, pharma companies, and others. We can help ensure that products are used effectively, serve as scientific resources and experts, advise on upcoming advances in treatments, and provide input about relevant scientific and clinical data.