TY  - BOOK
AU  - Elwood, J. Mark.
TI  - Critical appraisal of epidemiological studies and clinical trials
SN  - 9780198529552
PY  - 2007///
CY  - Oxford
PB  - Oxford University Press
KW  - Clinical Trials
KW  - Epedemiology - Research - Methodology
KW  - Epidemiologic Methods
ER  -