The William H. Welch House is a three-story rowhouse located at 935 St. Paul Street in Baltimore, Maryland.
 Probably built in the 1880s, it is notable as the residence of William H. Welch (1850-1934) from 1891 to 1908.
 Welch was one of the "Big Four" founding professors at Johns Hopkins Hospital, and an important conduit of European medical research methods and ideas to the United States.
 He was also the first dean of the Johns Hopkins University School of Medicine and the first director of the Johns Hopkins School of Hygiene and Public Health.
 The house was designated a National Historic Landmark in 1976, and is included in the Baltimore National Heritage Area.
Barton Childs (February 29, 1916 – February 18, 2010) was an American pediatrician and geneticist.
 He was born in Chicago, Illinois, and graduated from Williams College in 1938.
 In 1942, he received his M.D. from Johns Hopkins University.
 Following military service in World War II, he returned to Johns Hopkins for a residency in pediatrics.
 After a fellowship at Children’s Hospital in Boston, he returned to Johns Hopkins University in 1949, where he remained until his retirement in 1981.
 He remained a professor emeritus in the Department of Pediatrics at The Johns Hopkins University School of Medicine until his death.
The Johns Hopkins University (commonly referred to as Johns Hopkins, JHU, or simply Hopkins) is an American private research university in Baltimore, Maryland.
 Founded in 1876, the university was named for its first benefactor, the American entrepreneur, abolitionist, and philanthropist Johns Hopkins.
 His $7 million bequest—of which half financed the establishment of Johns Hopkins Hospital—was the largest philanthropic gift in the history of the United States at that time.
 Daniel Coit Gilman, who was inaugurated as the institution's first president on February 22, 1876, led the university to revolutionize higher education in the U.S. by integrating teaching and research.
 Adopting the concept of a graduate school from Germany's ancient Heidelberg University, Johns Hopkins University is considered the first research university in the United States.
Richard A. Macksey (born 1931) is Professor of Humanities and Co-founder and longtime Director of the Humanities Center at The Johns Hopkins University, where he has taught critical theory, comparative literature, and film studies.
 Professor Macksey was educated at Johns Hopkins, earning his B.A. in 1953 and his Ph.D. in 1957.
 He has taught at Johns Hopkins (both the school of Arts & Sciences as well as the Medical School) since 1958.
 He is the longtime Comparative Literature editor of MLN (Modern Language Notes), published by Johns Hopkins University Press.
 He is a recipient of the Hopkins Distinguished Alumnus Award.
 Dr. Macksey also presides over one of the largest private libraries in Maryland, with over 70,000 books and manuscripts.
The Johns Hopkins Hospital (JHH) is the teaching hospital and biomedical research facility of the Johns Hopkins School of Medicine, located in Baltimore, Maryland, U.S.
 It was founded in 1889 using money from a bequest by philanthropist Johns Hopkins.
 Johns Hopkins Hospital and the school of medicine are the founding institutions of modern American medicine and the birthplace of numerous medical traditions including rounds, residents and housestaff.
 Many medical specialties were formed at the hospital including neurosurgery, by Harvey Cushing; cardiac surgery by Alfred Blalock; and pediatrics and child psychiatry, by Leo Kanner.
The Johns Hopkins Hospital Historical Club was a society devoted to studying the history of medicine.
 Founded on 10 November 1890 by more than 30 people including William Osler, William H. Welch, William Stewart Halsted, and Howard A. Kelly, its first meeting was held at the library of the Johns Hopkins Hospital on 30November.
 As a precursor to the William H. Welch Institute of the History of Medicine founded at Johns Hopkins in 1929, the Historical Club was instrumental to the development of the discipline of medical history.
Duke E. Cameron is an American cardiac surgeon.
 He is the Cardiac Surgeon in Charge at Johns Hopkins Hospital; Chief of Cardiac Surgery at Johns Hopkins University School of Medicine; the James T. Dresher Sr.
 Professor of Surgery; Director of Pediatric Cardiac Surgery; and Director of The Dana and Albert "Cubby" Broccoli Center for Aortic Diseases , at the Johns Hopkins Hospital.
 His clinical interests include:
The Johns Hopkins Medical Journal was a medical journal published by the Johns Hopkins University that ceased publication in 1982.
 It was established in December 1889 as "The Johns Hopkins Hospital Bulletin".
 It was renamed "Bulletin of the Johns Hopkins Hospital" in 1924, before obtaining its final title in 1967.
 The journal is abstracted and indexed in Index Medicus/MEDLINE/PubMed.
Ephraim Y. Levin, born Feb.22, 1933, Baltimore, Maryland.
 1957 BA and MA, 1953, MD, 1957, all at Johns Hopkins University.
 Internship and residencies at Johns Hopkins Hospital and Sinai Hospital of Baltimore.
 Married Ruth Lee Shefferman June 17, 1956; Four children: Joshua, Rebecca, Daniel, and Michael.
 Served in USPHS 1953-1998, on active duty 1958-1960 and 1974-1998.
 With Seymour Kaufman discovered the role of ascorbic acid in the enzymatic hydroxylation of dopamine to form norepinephrine, the first evidence for a specific metabolic function for this vitamin.
 Fellowship with Konrad Bloch at Harvard University 1961-1963, under auspices of Sinai Hospital.
 On Faculty of Pediatrics at Johns Hopkins School of Medicine 1963-1974.
 Along with Vagn Flyger, demonstrated the partial deficiency of uroporphyrinogen cosynthetase in congenital erythropoietic porphyria of cattle and human beings, its occurrence in asymptomatic carriers of the disease, in fibroblasts as well as in bone marrow, and its probable cause of red bones in fox squirrels.
The Johns Hopkins University School of Medicine (JHUSOM), located in Baltimore, Maryland, U.S., is the academic medical teaching and research arm of Johns Hopkins University.
 Johns Hopkins has consistently been among the nation's top medical schools in the number of research grants awarded by the National Institutes of Health.
 Its main teaching hospital, the Johns Hopkins Hospital, is ranked the #3 hospital in the United States by "U.S. News & World Report".

Question: Where are both Johns Hopkins Hospital and John Hopkins University located?
Answer: Baltimore, Maryland