American Heart Association
The American Heart Association grew out of a set of smaller precursor groups. The primary precursor was the Association for the Prevention and Relief of Heart Disease, formed in New York City in 1915, to study whether patients with heart disease could safely return to work. Several similar organizations formed or evolved in Boston, Philadelphia, and Chicago in the 1920s. Recognizing the need for a national organization to share research and promote findings, the American Heart Association was formed in 1924 by six cardiologists representing several of these precursor groups.
Interamerican Society of Cardiology
The Interamerican Society of Cardiology (SIAC for its Spanish acronym) is a nongovernmental association formed by the National Societies of Cardiology of the American Continent.
The Interamerican Society of Cardiology, together with the European Society of Cardiology, founded in 1950, the Asian Pacific Society of Cardiology, founded in 1956, and the African Society of Cardiology founded in 1981 are the four Intercontinental Professional Societies of Cardiology of the World Heart Federation (WHF for its acronym in English).