[PAHO. In the beginning: 1902-20].
D003226:Congresses as Topic / Q000266:history; D049673:History, 20th Century; D006801:Humans; D007390:International Agencies / Q000266:history; D007843:Latin America; D010175:Pan American Health Organization / Q000266:history*; D014481:United States; D015004:Yellow Fever / Q000266:history / Q000517:prevention & control
En los comienzos: 1902-1920.