TY  - BOOK
AU  - Fletcher, Robert H
AU  - Fletcher, Suzanne W
AU  - Fletcher, Grant S
TI  - Clinical epidemiology: the essentials
SN  - 9781451144475
PY  - 2014///
CY  - Philadelphia, PA
PB  - Lippincott Williams & Wilkins
KW  - EPIDEMIOLOGY
ER  -