Science and technology in Argentina Argentina have enjoyed an international respect since the turn of the 1900s, when Dr. Luis Agote devised the first safe and effective means of blood transfusion as well as René Favaloro, who was a pioneer in the improvement of the bypass surgery . Argentina is the Latin American country with the most Nobel Prize laureates; and has three Nobel Prize winners in the sciences: Bernardo Houssay in Physiology or Medicine in 1947, Luis Federico Leloir in Chemistry in 1970, and César Milstein in Physiology or Medicine in 1984. Dr. Domingo Liotta created the first artificial heart in 1969, revolutionizing the
Human rights in Argentina by the Argentine 601st Intelligence Battalion in mid-July 1978, which started counting victims in 1975, gave the figure of 22,000 persons. This estimate was first published by John Dinges in 2004. Estimates by human rights organizations were up to 30,000. The Montoneros admitted losing 5,000 guerrillas killed, and the ERP admitted the loss of another 5,000 of their own guerrillas killed. By comparison, Argentine security forces cite 775 deaths of their own. In contrast, there were 13,500 victims of left-wing terrorism in Argentina. There is no agreement on the actual number of "detenidos-desaparecidos". In an interview with Buenos Aires daily