Parexel International Corporation, a biopharmaceutical services company, provides clinical research, medical marketing, consulting, and informatics and advanced technology products and services to pharmaceutical, biotechnology, and medical device industries worldwide. The company operates through three segments: Clinical Research Services, PAREXEL Consulting and Medical Marketing, and Perceptive. The Clinical Research Services segment offers clinical trials management and biostatistics, data management, and clinical pharmacology, as well as related medical advisory and investigator site services. It provides these services in cardiology, oncology, infectious diseases, neurology, allergy/immunology, endocrinology/metabolism, gastroenterology, obstetrics/gynecology, orthopedics, pediatrics, psychiatry, and transplantation areas. The PAREXEL Consulting and Medical Marketing segment offers drug development, regulatory, manufacturing compliance, business process consulting, staffing solutions, and marketing expertise consultation to the pharmaceutical, biopharmaceutical, and medical device industries in the United States, Europe, and Asia. The Perceptive segment offers a portfolio of products and services that include medical imaging services, interactive voice response systems, clinical trials management systems, Web-based portals, systems integration, and patient diary applications. PAREXEL was founded by Josef H. von Rickenbach in 1983. The company is headquartered in Waltham, Massachusetts.