1. Caffeine consumption;Gilbert,1984
2. Coffee and coronary heart disease;Myers;Arch Intern Med,1992
3. A meta-analysis of coffee, myocardial infarction, and coronary death;Greenland;Epidemiology,1993
4. The chemical components of coffee;Spiller,1984
5. Clinical Epidemiology: A Basic Science for Clinical Medicine;Sackett,1991