1. Federal and nationwide intensive care units and healthcare costs: 1986–1992;Halpern;Crit Care Med,1994
2. National estimates of intensive care utilization and costs: Canada and the United States;Jacobs;Crit Care Med,1990
3. Methods for the economic evaluation of health care programmes;Drummond,1987
4. Ontario Guidelines for Economic Analysis of Pharmaceutical Products,1994
5. How attractive doe a new technology have to be warrant adoption and utilization? Tentative guidelines for using clinical and economic evaluations;Laupacis;Can Med Assoc J,1992