TY  - BOOK
AU  - Fletcher,Robert H.
AU  - Fletcher,Suzanne W.
AU  - Wagner,Edward H.
TI  - Clinical epidemiology: the essentials 
SN  - 0683032690
AV  - RA652.2 .C55 F537C 1996
PY  - 1996///
CY  - Philadelphia, Pa.
PB  - Lippincott
KW  - CLINICAL EPIDEMIOLOGY
KW  - EPIDEMIOLOGIC METHODS
N1  - Includes bibliographical references and index
ER  -