TY  - BOOK
AU  - Raven,Ann
TI  - Clinical trials: an introduction 
SN  - 1857750357
AV  - R850 .R38 1993
PY  - 1993///
CY  - Oxford
PB  - Radcliffe Medical Press
KW  - Clinical trials
N1  - Includes bibliographical references and index
ER  -