Sample size calculations. Must do better.
BMJ
; 338: b2323, 2009 Jun 09.
Article
in En
| MEDLINE
| ID: mdl-19509036
Full text:
1
Database:
MEDLINE
Main subject:
Biomedical Research
Language:
En
Journal:
BMJ
Journal subject:
MEDICINA
Year:
2009
Type:
Article