TY  - BOOK
AU  - Fletcher,Robert H.
AU  - Fletcher,Suzanne W.
AU  - Wagner,Edward H.
TI  - Clinical epidemiology: the essentials 
SN  - 0683032518
U1  - 614.4 FLC 
PY  - 1988///
CY  - Baltimore
PB  - Williams & Wilkins
KW  - Clinical epidemiology
KW  - Epidemiologic Methods
N1  - Includes bibliographies and index
ER  -