1. Hnatiuk O, Moores L, Loughney T, Torrington K. Evaluation of internists’ spirometric interpretations. J Gen Intern Med. 1996;11:204–8.
2. Cecil RL. Textbook of Medicine, W.B. Saunders Company, Philadelphia, 1927.
3. Hart J, Kahan E, Derazne E. Consultants’ perceptions of quality of referrals. Isr J Med Sci. 1991;27:405–7.
4. Foreman J. Physicians refer 9% of patients. Arch Ophthal. 1992;110:1539.
5. Culliton BJ. The public’s perception of subspecialty medicine: primary care is not fifty percent of the answer. ABIM Summer Conference Report. 1994;81–6.