TY  - BOOK
AU  - Campbell,M J
AU  - Machin,D
AU  - Walters,S J
TI  - Medical statistics:  a textbook for the health sciences
SN  - 9780470025192
PY  - 2007///
CY  - Chichester
PB  -  John Wiley and Sons Ltd, 
KW  - Medical statistics
ER  -