Fletcher, Robert H. Clinical epidemiology : the essentials / Rober Fletcher, Suzanne W. Fletcher, Grant S. Fletcher - 5th ed - Philadelphia : Wolters Kluwer Health/Lippincott Williams & Wilkins, 2014 - 255 p. : ill. ISBN: 9781451144475 / 1,960.00 Subjects--Topical Terms: Clinical epidemiologyEpidemiologic Methods LC Class. No.: RA652.2.C55 / F57 C5 2014