As the only professional society that is dedicated exclusively to the medical subspecialty of sleep medicine, the AASM has steadily grown since it was established in 1975. Today the AASM’s active membership comprises more than 8,000 individuals and 1,200 sleep disorders centers and laboratories for sleep-related breathing disorders. This strong membership support helps the AASM continue to be the leader in setting standards and promoting excellence in sleep medicine health care, education and research. Learn how you can contribute to the AASM’s growth through the 2010 AASM Member-Get-A-Member Campaign.