José Gregório Hernandez Cisneros, Venezuelan pathologist (Isnotú, Trujillo State 25 October 1864 – Caracas 26 June 1919)

Demonstrated that the quantity of red cells in inhabitants of tropical region is smaller than that in temperate zones

Sobre el numero de los globulos rojos. Gac. Med. Caracas 1(15):84, 1893-4

Described the angina pectoris of yellow fever

Sobre la angina de pecho de naturaleza paludosa. Gac. Med. Caracas 1(21):129-31, 1894