TY  - BOOK
AU  - Campbell, Michael J.
AU  - Machin, David
TI  - Medical statistics: a commonsense approach
SN  - 471987212
U1  - 610.21 
PY  - 1999///
CY  - Chichester
PB  - John Wiley
KW  - Medical statistics; Medicine - Research - Statistical methods
ER  -