Are uncontrolled clinical studies ever justified?
N Engl J Med
.
1980 Oct 30;303(18):1067.
doi: 10.1056/NEJM198010303031822.
Authors
H Sacks
,
S Kupfer
,
T C Chalmers
PMID:
7421910
DOI:
10.1056/NEJM198010303031822
No abstract available
Publication types
Letter
MeSH terms
Clinical Trials as Topic / standards*
Drug Evaluation*
Humans