TY  - BOOK
AU  - Sackett, David L.
TI  - Clinical epidemiology: a basic science for clinical medicine 
SN  - 0316765996
PY  - 1991///
CY  - Boston
PB  - Little, Brown
KW  - Epidemiologic Methods
N1  - Rev. ed. of: Clinical epidemiology / David L. Sackett, R. Brian Haynes, Peter Tugwell. 1st ed. c1985.;Five critical appraisal cards in pocket inside back cover; Includes bibliographical references and index
ER  -