TY  - BOOK
AU  - Campbell Michael J.
AU  -  Machin David
TI  - Medical statistics : A commonsence approach
SN  - 0471987212
U1  - Ls, N9 
PY  - 1999///
CY  - Chichester
PB  - John Wiley & Sons UK    
KW  - MEDICINE
ER  -