Question: In what city are both Howard University Hospital and MedStar National Rehabilitation Hospital located?

Context articles: MedStar National Rehabilitation Hospital
Rookwood Hospital
Rehabilitation Institute of Chicago
MedStar Georgetown University Hospital
Howard University Hospital
Spaulding Rehabilitation Hospital Cape Cod
Children's National Medical Center
Magee Rehabilitation Hospital
Rancho Los Amigos National Rehabilitation Center
Burke Rehabilitation Hospital

MedStar National Rehabilitation Network (MedStar NRH) is located in Washington, D.C., and specializes in treating persons with physical disabilities, including spinal cord injury, brain injury, stroke, arthritis, amputation, multiple sclerosis, post-polio syndrome, orthopedic, and other neurological conditions.
Rookwood Hospital is a rehabilitation hospital situated in Llandaff, in the city of Cardiff in South Wales.
 It is the site of one of only twelve spinal rehab units in the United Kingdom.
 It is also a regional neuro-rehabilitation hospital as well as housing a geriatric day hospital, a geriatric intermediate care facility and a geriatric medicine rehabilitation ward.
 The largest of Cardiff's Parkinson's Disease services is also run from Rookwood Hospital.
 The hospital is managed by Cardiff and Vale University Health Board.
 Rookwood Hospital is also the home to Rookwood Sound Hospital Radio, which broadcasts at the site and to the University Hospital Llandough and is where Radio DJ Huw Stephens began his career at 14.
The Rehabilitation Institute of Chicago (RIC) is a specialty rehabilitation hospital located in Chicago, Illinois, United States.
 It also operates a network of alliance hospitals and outpatient and day rehabilitation clinics throughout Illinois and Indiana.
 RIC is ranked #1 Rehabilitation Hospital in America by U.S. News & World Report since 1991.
MedStar Georgetown University Hospital is one of the national capital area's oldest academic teaching hospitals.
 It is a not-for-profit, acute care teaching and research facility located in the Georgetown neighborhood of the Northwest Quadrant of Washington, D.C.
 MedStar Georgetown is co-located with the Georgetown University Medical Center and is affiliated with the Georgetown University School of Medicine.
 Its clinical services represent one of the largest, most geographically diverse, and fully integrated healthcare and delivery networks in the area.
 MedStar Georgetown is home to the internationally known Lombardi Comprehensive Cancer Center, as well as centers of excellence in the neurology, neurosurgery, psychiatry, gastroenterology, transplant and vascular surgery.
 Originally named Georgetown University Hospital, it became part of the MedStar Health network in 2000.
Howard University Hospital, previously known as Freedmen's Hospital, is a major hospital lcated in Washington, D.C., built on the site of the previous Griffith Stadium.
 The hospital has served the African American community in the area for over 150 years, having been established in 1862 to cater for the medical needs of the thousands of African Americans who came to Washington during the Civil War, seeking their freedom.
 The first hospital of its kind to provide medical treatment for former slaves, it later became the major hospital for the area's African-American community.
 Following the closure of D.C. General Hospital, As of 2016, the hospital has the highest rate of wrongful death lawsuits of any health facility in Washington D.C. over the previous decade.
The Spaulding Rehabilitation Hospital Cape Cod (SRHCC) is a rehabilitation hospital located in Sandwich, Massachusetts that serves both Cape Cod and the Islands.
 It was founded in 1995 and is part of the Spaulding Rehabilitation Network.
Children’s National Medical Center (formerly DC Children’s Hospital) is ranked among the top 10 children’s hospitals in the country by "U.S. News & World Report."
 Located just north of the McMillan Reservoir and Howard University, it shares grounds with Washington Hospital Center, National Rehabilitation Hospital, and the DC Veterans Affairs Medical Center.
 Kurt Newman, M.D., has served as the president and chief executive officer of Children’s National since 2011.
 Children's National is a not-for-profit institution that performs more than 450,000 visits each year.
 Featuring 303 beds and a Level IV NICU, Children's National is the regional referral center for pediatric emergency, trauma, cancer, cardiac and critical care as well as neonatology, orthopaedic surgery, neurology and neurosurgery.
Magee Rehabilitation Hospital, founded in 1958, is a 96-bed specialty medical rehabilitation hospital providing physical and cognitive rehabilitation services.
 Magee’s flagship facility is located in Center City Philadelphia.
 In addition to the main campus that offers comprehensive services for spinal cord injury, brain injury, stroke, orthopaedic replacement, amputation, pain management and work injury, Magee provides an expanding outpatient network serving the surrounding communities.
 In 1985, Magee’s brain injury rehabilitation program became the first in the nation to be accredited by the Commission on the Accreditation of Rehabilitation Facilities.
 Magee partnered with Jefferson Hospital to create one of the nation’s 14 federally designated centers for spinal cord injury rehabilitation.
 Magee has been rated one of America’s leading rehabilitation hospitals by U.S. News & World Report.
 Magee provides treatment to more than 5,000 individuals annually.
 Magee is authorized to treat wounded military personnel returning from war.
 Magee is not an Obligated Group Affiliate.
Rancho Los Amigos National Rehabilitation Center is a rehabilitation hospital located in Downey, California, United States.
 Its name in Spanish means "Friends' Ranch".
Burke Rehabilitation Hospital is a non-profit, 150-bed acute rehabilitation hospital located in White Plains, New York.
 It is the only hospital in Westchester County entirely dedicated to rehabilitation medicine.
 Opened in 1915, Burke has been involved in medical rehabilitation for over one hundred years.
 As of January 2016, Burke is a member of the Montefiore Health System, Inc.