Massachusetts General Hospital (MGH) in Boston, is the third oldest hospital in the nation and the largest in New England. The hospital has been ranked as one of the nation’s best hospitals by U.S. News and World Report. Founded in 1811, its main aim is to provide quality health care to the individuals and communities it serves, to advance care through excellence in biomedical research, and to educate future academic and practical leaders of the health care professions. In 1994, the hospital formed Partners HealthCare System – an integrated healthcare delivery system - in association with the Brigham and Women's Hospital. Accredited by the Joint Commission on Accreditation of Healthcare Organizations (JCAHO), the hospital excels in every specialty and subspecialty of medicine and surgery. It is an 893-bed facility and is the largest teaching hospital of Harvard Medical School. With care centers for AIDS, cancer, cardiovascular research, cutaneous biology, and photomedicine, MGH conducts the largest hospital-based research program in the nation. Areas of specialization, among many others, are Cardiology, Ethnic Medicine, Gastroenterology, Gynecology, Hematology, Internal Medicine, Oncology, Ophthalmology, Pediatrics, Physiology, Mental Health, and Nutrition. The Neurovascular Center at the hospital provides a complete range of services to patients with neurovascular problems of the brain and spinal cord. The hospital also maintains separate departments for Alzheimer’s and other neurodegenerative diseases, emergency cases, and women’s health. The Avon Foundation Comprehensive Breast Evaluation Center, Cardiovascular Research Center, Environmental Services Department, In Vitro Fertilization (IVF) Unit, Laboratory for Molecular Medicine, North End Community Health Center, and the Weight Center, are the other important sections in the hospital. In addition, the Radiology Department offers a full-range of diagnostic testing services utilizing state-of-the-art equipment. Rehabilitation services are also available. Further, there are specialized units within the hospital to provide the latest in health information and medical research. They are the Access to Resources for Community Health (ARCH), the Blum Patient & Family Learning Center, the Cancer Resource Room, and the Treadwell Library. A part of the MGH community health network, ARCH strives to increase electronic access to quality health information and resources in the urban communities of Chelsea, Revere, Everett, and Charlestown. The Blum Patient and Family Learning Center is a health and wellness center providing resource on all health issues. The Cancer Resource Room serves as an information resource for cancer patients and families and helps cancer patients through special programs. The Treadwell Library provides comprehensive information for patient care.