The American Board of Medical Specialties requires doctors to be recertified every 10 years and has recently begun asking doctors to demonstrate up-to-date medical knowledge more frequently. The Association of American Physicians and Surgeons has filed an antitrust suit against the board, alleging that the recertification requirements reduce the amount of time doctors have available to spend with patients, lower the supply of hospital-based physicians and have not been shown to improve quality of care.

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