1. BUSINESS WEEK: 68 (30 7 1990).
2. The effect of the interim payment rate for the drug Epogen on Medicare expenditures and dialysis facility operations 1990
3. New medicines in review 1990 annual survey 1990
4. Long patent delay seen on genetically engineered drugs;New York Times,1990
5. Report of the National Commission on Orphan Diseases: 57 (1989).