The American Acaemy of Dermatology (AAD) is the largest organization of dermatologists in the world. It was founded in 1938 and represents 15,000 dermatologists in the United States and Canada. The Academy grants Fellowships and Associate Memberships, as well as Fellowships for Nonresidents of the USA or Canada. Since 1979, the AAD also publishes a monthly medical journal, the Journal of the American Academy of Dermatology.