TY  - BOOK
AU  - Elwood, J. Mark
TI  - Critical appraisal of epidemiological studies and clinical trials
T2  - Oxford medical publications
SN  - 0198529554
PY  - 2007///
CY  - Oxford
PB  - Oxford University Press
KW  - Medical Statistics
KW  - Epidemiology
KW  - Medicine-Information Sources
KW  - Research-Health Services
ER  -