TY  - BOOK
AU  - Elwood, J. Mark.
TI  - Causal relationships in medicine: a practical system for critical appraisal
T2  - Oxford medical publications
SN  - 0192617036
U1  - 614.4/028 19
PY  - 1988///
CY  - Oxford, New York
PB  - Oxford University Press
KW  - Diseases
KW  - Causes and theories of causation
KW  - Epidemiologic Methods
KW  - Epidemiology
KW  - Research
KW  - Methodology
N1  - Includes index; Bibliography: p. 257-263
UR  - http://www.loc.gov/catdir/enhancements/fy0639/88009921-d.html
ER  -