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A comparison of alternative models of prescription drug utilization.

P. Grootendorst, P V Grootendorst, 1995, Health economics.

Impact of reference-based pricing of nitrates on the use and costs of anti-anginal drugs.

A R Levy, B. O'brien, A. Levy, 2001, CMAJ : Canadian Medical Association journal = journal de l'Association medicale canadienne.

Does it matter whom and how you ask? inter- and intra-rater agreement in the Ontario Health Survey.

D. Feeny, W. Furlong, D. Feeny, 1997, Journal of clinical epidemiology.