TY  - BOOK
AU  - Hulley,Stephen B.
AU  - Cummings,Steven R.
AU  - Browner,Warren S.
AU  - Grady,Deborah G.
AU  - Newman,Thomas B.
TI  - Designing Clinical Research
SN  - 9781608318049
U1  - 610.72 21
PY  - 2007///
CY  - Philadelphia : 
PB  - Wolters Kluwer , 
KW  - Investigación
KW  - Medicina
N1  - Basic ingredients.-- Study design.-- Implementation
ER  -