Fletcher, Robert H. Clinical epidemiology : the essentials / Robert H. Fletcher, Suzanne W. Fletcher, Edward H. Wagner. - 3rd edition - Baltimore, Maryland : Williams & Wilkins, 1996. - ix, 276 pages : illustrations ; 23 cm Includes bibliographical references and index. Ch. 1. Introduction -- Ch. 2. Abnormality -- Ch. 3. Diagnosis -- Ch. 4. Frequency -- Ch. 5. Risk -- Ch. 6. Prognosis -- Ch. 7. Treatment -- Ch. 8. Prevention -- Ch. 9. Chance -- Ch. 10. Studying Cases -- Ch. 11. Cause -- Ch. 12. Summing Up. ISBN: 0683032690 Subjects--Topical Terms: --Epidemiologic Methods--Clinical epidemiology.