Infrastructure tools to support an effective radiation oncology learning health system

Amerika (oba Amereka, United States of America, USA), ensi mu North America.

• Président: Joe Biden
• Vice-président: Kamala Harris
• Awamu neekeri km²
• Abantu: 328,239,523 (2019)
• Ekibangirizi n'abantu: 35 km²

• New York City * 8,622,698 (2017)
• Los Angeles * 4,030,904 (2016)
• Chicago * 2,704,958 (2016)
• Washington, D.C. * 672,228 (2015) (ekikulu)

• Commons [1]