American Heart Association
The American Heart Association (AHA) is a non-profit organization in the United States that funds cardiovascular medical research, educates consumers on healthy living and fosters appropriate cardiac care in an effort to reduce disability and deaths caused by cardiovascular disease and stroke. Originally formed in New York City in 1924 as the Association for the Prevention and Relief of Heart Disease, it is currently headquartered in Dallas, Texas. The American Heart Association is a national voluntary health agency.
American Society of Hypertension
The American Society of Hypertension (abbreviated ASH) was an American non-profit professional society dedicated to advancing research on hypertension and related cardiovascular diseases. 
The ASH was founded in 1985 by 17 scientists and physicians. In 2005, the ASH cut ties with the "American Journal of Hypertension" over a dispute over control of content published in the "Journal". In 2006, the society became the center of a dispute over the appropriate role of pharmaceutical industry in medical research. The dispute prompted several members of an ASH group convened to write a new definition of high blood pressure to resign from the group; those resigning included former ASH president Michael H. Alderman. In 2017, the society dissolved and merged with the American Heart Association. The "Journal of the American Society of Hypertension", which was originally the official journal of the ASH, is now affiliated with the AHA.