For decades, experts have been reminding people to stretch to improve and maintain flexibility and, for the first time, the American College of Sports Medicine has issued guidelines for flexibility training.

In women who have had a previous cesarean section, the American College of Obstetricians and Gynecologists issued a bulletin that misoprostol never be used for this purpose.

In 1996, the American College of Rheumatology issued a statement saying the evidence was "compelling" that implants did not cause systemic disease.

In October, the American College of Sports Medicine issued a report calling on NASA to put greater emphasis on resistive exercise as a way to promote astronauts' health.

The American College of Obstetricians and Gynecologists recently issued a policy statement that doctors were "almost never" justified in going to court to compel treatment for pregnant woman.

In an attempt to counter that problem, the American College of Physicians yesterday issued new guidelines that assign allergy tests to a supporting role rather than a primary role in diagnosing allergies.

In 1988, the American College of Obstetricians and Gynecologists issued guidelines advising that "ultrasound is not necessary for every woman or in every pregnancy."

The American College of Surgeons has never issued a document on the learning curve.

Blue Cross and Blue Shield and the American College of Physicians are issuing new guidelines today for the appropriate use of medical tests.

Last July, the American College of Obstetricians and Gynecologists, which collaborated with the pediatrician group on its guidelines, issued a "technical bulletin" for members about the condition.