Question: Which non profit practice and medical research group based in Rochester, Minnesota was founded by William Worrall Mayo?

full_context: Document 1: University of Pittsburgh Medical Center: The University of Pittsburgh Medical Center (UPMC) is a $16 billion integrated global nonprofit health enterprise that has 80,000 employees, over 30 hospitals with more than 8,000 licensed beds, 600 clinical locations including outpatient sites and doctors’ offices, a 3.2 million-member health insurance division, as well as commercial and international ventures. is closely affiliated with its academic partner, the University of Pittsburgh. It is considered a leading American health care provider, as its flagship facilities have ranked in "US News & World Report" "Honor Roll" of the approximately 15 to 20 best hospitals in America for over 15 years. As of 2016, UPMC is ranked 12th nationally among the best hospitals (and second in Pennsylvania) by "US News & World Report" and ranked in 15 of 16 specialty areas when including Magee-Womens Hospital of UPMC. This does not include Children's Hospital of Pittsburgh of UPMC which ranked in the top 10 of pediatric centers in a separate "US News" ranking.
Document 2: Ronald Ross: Sir Ronald Ross (13 May 1857 – 16 September 1932), was a British medical doctor who received the Nobel Prize for Physiology or Medicine in 1902 for his work on the transmission of malaria, becoming the first British Nobel laureate, and the first born outside Europe. His discovery of the malarial parasite in the gastrointestinal tract of a mosquito proved that malaria was transmitted by mosquitoes, and laid the foundation for the method of combating the disease. He was a polymath, writing a number of poems, published several novels, and composed songs. He was also an amateur artist and natural mathematician. He worked in the Indian Medical Service for 25 years. It was during his service that he made the groundbreaking medical discovery. After resigning from his service in India, he joined the faculty of Liverpool School of Tropical Medicine, and continued as Professor and Chairman of Tropical Medicine of the institute for 10 years. In 1926 he became Director-in-Chief of the Ross Institute and Hospital for Tropical Diseases, which was established in honour of his works. He remained there until his death.
Document 3: Rochester General Hospital: Rochester General Hospital, an affiliate hospital of Rochester Regional Health, is a 528-bed tertiary care hospital, located in Rochester, New York. Rochester General Hospital has been serving the residents of the Rochester Region and beyond since 1847. Rochester General Hospital offers primary medical care and a broad range of specialties. Rochester General Hospital’s medical staff includes over 1,000 primary care physicians and specialists, many of whom have offices at the hospital and throughout the community.
Document 4: Dr. William W. Mayo House: The Dr. William W. Mayo House, located at 118 North Main Street in Le Sueur, Minnesota, United States, is listed on the National Register of Historic Places (NRHP). It was built in 1859 by James Mayo and his brother, William Worrall Mayo who emigrated from Salford, United Kingdom, to the United States in 1846 and became a doctor. William's older son, William James Mayo was born in the home in 1861. William W. Mayo aided pioneers and their families during the Dakota War of 1862 and later moved to Rochester where he became the examining surgeon for the southern Minnesota Civil War draft board. He and his sons, William and Charles founded the 27-bed Saint Marys Hospital which opened in 1889 following the 1883 Rochester tornado. They later founded their namesake, the Mayo Clinic.
Document 5: Wulf H. Utian: Wulf H. Utian is a physician, reproductive endocrinologist, clinical researcher, and academic women's health department administrator. He is best known for first recognizing menopause as a potential health-related issue. He is the co-founder of the International Menopause Society and founder of the North American Menopause Society. Previously he has worked as a medical department administrator at the Mount Sinai Medical Center, the University Hospitals of Cleveland, and academic chairman of the department of Reproductive Biology at Case Western Reserve University School of Medicine. He is currently the Arthur H. Bill Professor Emeritus of Reproductive Biology at the Case Western Reserve University School of Medicine, a consultant in women's health, and Scientific Director of Rapid Medical Research Inc.
Document 6: William S. Maynard: William Sumner Maynard (April 25, 1802 – June 18, 1866) was a politician from the U.S. state of Michigan, who served as mayor of Ann Arbor, Michigan from 1856 to 1858 and again from 1865 to 1866. Maynard was born in Berkshire County, Massachusetts. He suffered from severe depression and (while still Mayor) committed suicide in 1866 by an overdose of (laudanum) morphine. Long notes of explanation were found in the pockets of his dressing gown, detailing Maynard's struggles with "The Evil One" (a synonym for Satan). The notes were published verbatim in Ann Arbor's several weekly newspapers. Maynard had been Ann Arbor's biggest land developer, a member and organizer in 1836 of the Ann Arbor Land Company, which acquired the former Henry Rumsey farm east of town, conveying 40 acres thereof to the newly formed State of Michigan as the site of the future University of Michigan, while hoping to profit by subdividing and selling town lots adjacent to the campus. Maynard also developed much of the land west of Ann Arbor's Main Street, as far west as the present Seventh Street. His own landmark dwelling was on the northwest corner of Main and William Street, and the estate stretched west to the present Ashley street, and halfway up the block to Liberty. For many years he owned a grocery, drug and dry-goods store and was said to be the wealthiest man in Ann Arbor at the time of his suicide. His grave is in Forest Hill Cemetery in Ann Arbor.
Document 7: Medical facilities of Seattle: This is the main article on the medical facilities of Seattle, Washington. Seattle, USA is well served medically. The University of Washington is consistently ranked among the country's dozen leading institutions in medical research; Group Health Cooperative was one of the pioneers of managed care in the United States; and Seattle was a pioneer in the development of modern paramedic services with the establishment of Medic One in 1970.
Document 8: Rochester, Minnesota: Rochester is a city in the U.S. State of Minnesota and is the county seat of Olmsted County. Located on the Zumbro River's south fork, the city has a population of 106,769 according to the 2010 United States Census. The U.S. Census Bureau estimated that the 2015 population was 112,225. It is Minnesota's third-largest city and the largest city located outside of the Minneapolis-St. Paul-Bloomington Metropolitan Statistical Area. As of 2015, the Rochester metropolitan area has a population of 213,873. It is the home of Mayo Clinic and one of IBM's largest facilities.
Document 9: William Worrall Mayo: William Worrall Mayo ( ; May 31, 1819 – March 6, 1911) was a British-American medical doctor and chemist. He is best known for establishing the private medical practice that later evolved into the Mayo Clinic. He was a descendant of a famous English chemist, John Mayow. His sons, William James Mayo and Charles Horace Mayo, established a joint medical practice in Rochester in the U.S. state of Minnesota in the 1880s.
Document 10: Medical Faculty Associates: The George Washington University Medical Faculty Associates is a non-profit 501(c)3 physician group practice affiliated with the George Washington University. The MFA group practice is made up of academic clinical faculty of the GW Medical School. As of 2015, the group had more than 750 physicians providing medical services to the Washington DC, Northern Virginia, and Maryland areas. The GW Medical Faculty Associates offers over 51 specialty areas of care. The organization is a partner with the George Washington University Hospital and the School of Medicine and Health Sciences.
Document 11: Mallinckrodt Institute of Radiology: The Mallinckrodt Institute of Radiology (MIR) is an academic radiology center associated with the Washington University School of Medicine, located within the Washington University Medical Center in St. Louis, Missouri. In addition to providing diagnostic and therapeutic patient-care services, the institute is a top research and education center. It employs over 140 academic staff and is among the top recipients of National Institutes of Health funding of radiology departments. The center provides radiology services to Barnes-Jewish and St. Louis Children's hospitals, as well as multiple other hospitals and outpatient centers in the St. Louis area. The center performs 700,000 examinations and procedures annually.
Document 12: William Sharp (homeopath): William Sharp (1805–1896) was an English surgeon and physician. Sharp is credited with first advocating the establishment of local museums in Britain and for putting science on the curricula of British public schools. He was the first science teacher in a British public school and an early advocate of homoeopathy.
Document 13: William Gunn (physician): William Gunn (1855–1922) was one of Florida's first black doctors. He began his career working as a driver for a doctor at the Knott House. Gunn was born in Leon County, Florida in 1855. He was mentored by Dr. Betton, a white physician who financed Gunn's education at Meharry Medical College after Gunn came to work for him as a driver.
Document 14: Mayo Clinic: The Mayo Clinic is a nonprofit medical practice and medical research group based in Rochester, Minnesota. It employs more than 4,500 physicians and scientists and 57,100 allied health staff. The practice specializes in treating difficult cases through tertiary care. It spends over $660 million a year on research.
Document 15: Clara Thompson: Clara Mabel Thompson (October 3, 1893 in Providence, Rhode Island – December 20, 1958) studied medicine at Johns Hopkins University and in her last year she was introduced to psychoanalysis. In the future years she developed as a psychoanalyst working with people like William Alanson White, Adolf Meyer, Harry Stack Sullivan, Joseph Cheesman Thompson, and Sándor Ferenczi. In the early 1940s Thompson founded the William Alanson White Psychiatric Foundation in New York together with Erich Fromm, Harry Stack Sullivan, Frieda Fromm-Reichmann, David Rioch and Janet Rioch (see www.wawhite.org). She worked there until her death on December 20, 1958
ground_truth: The Mayo Clinic