TY  - BOOK
AU  - Polgar, S
AU  - Thomas, S A
TI  - Introduction to research in the health sciences / 
SN  - 9780443074295
PY  - 2008///
CY  - Edinburgh
PB  - Churchill Livingstone Elsevier
KW  - Research
KW  - Research design
KW  - Medicine
KW  - Critical appraisal
ER  -