1. American Academy of Pediatrics 1990–1991 Fellowship Directory, p. 505.
2. Changes in age and sex specific tonsillectomy rates: United States, 1970–1977;Freeman;Am. J. Public Health,1982
3. Cost containment, hospital competition aren't limiting surgery center expansion;Henderson;Modern Healthcare,1987
4. Freestanding centers gaining on surgical suites;Henderson;Modern Healthcare,1988