TY  - BOOK
AU  - Fletcher, Robert H.
AU  - Fletcher, Suzanne W.
TI  - Clinical epidemiology: the essentials
SN  - 9780781752152
U1  - 614.4 
PY  - 2005///
CY  - Philadelphia
PB  - Lippincott Williams and Wilkins
KW  - Clinical Epidemiology
KW  - Epidemiologioc Methods
ER  -