1. Babcock, C.R., 1993. Physician Ownership Tied to Referrals for Services. Washington Post, 21 April 1993, p. A3.
2. Inefficient pricing can kill: the case of dialysis industry regulation;Barnett;Southern Economic Journal,1993
3. Danzon, P.M., 1982. Economic Factors in the Use of Laboratory Tests by Office-Based Physicians. Rand Report R-2525-1HCFA, August 1982.
4. Eichenwald, K., 1995. Death and Deficiency in Kidney Treatment. New York Times, 4 December 1995, pp. A1, B6–B7.
5. The production of dialysis by for-profit versus not-for-profit freestanding renal dialysis facilities;Griffiths;Health Services Research,1994