Cleveland Clinic (formally known as the Cleveland Clinic Foundation) is a multispecialty academic medical center located in Cleveland, Ohio, USA. Cleveland Clinic was established in 1921 by four prominent physicians for the purpose of providing patient care, research, and medical education in an ideal medical setting. It also serves as a national referral center and an international health resource providing specialty care for all diseases and disorders of the body. One of the largest private medical centers in the world, Cleveland Clinic saw more than 2,900,000 patient visits in 2005, with 53,000 hospital admissions. Patients arrive at Cleveland Clinic from more than 100 nations and all 50 United States. Cleveland Clinic’s approximately 1,700 salaried staff physicians represent 120 medical specialties and subspecialties.