1. Manpower and training requirements in pediatric cardiology;Adams;Pediatrics,1973
2. Pediatric cardiology manpower in the 1980s;Moller;Am Heart J,1986
3. DHHS Publication No.: (HRA)81-652;Modeling, Research and Data Technical Panel,1980
4. Selected characteristics of graduate medical education in the United States;Rowley;JAMA,1991
5. Subspecialization within pediatric practice: a broader spectrum;McCrindle;Pediatrics,1992