Annals of Internal Medicine was founded in 1927 by the American College of Physicians (ACP) and is a monthly publication. It was changed to a semi-monthly publication in 1988. Annals of Internal Medicine It is the leading international journal in the field of internal medicine, with high academic influence, and is known as one of the five comprehensive medical journals. The journal mainly publishes original research, reviews, practice guidelines, and critical articles on related aspects such as clinical practice, health care services, public health, medical policy, medical education, ethics, and research methodology.