TY  - GEN
AU  - Hill,Austin Bradford
TI  - Bradford hills principles of medical statistics
SN  - 0-340-53739-6
U1  - 610.31 
PY  - 1991///
CY  - London
PB  - Edward Arnold
KW  - Statistical methods
KW  - Variability
KW  - Correlation
KW  - Regression
KW  - Medical statistics
KW  - Medical  Science
ER  -