Toward the use of surgical placebo-controlled trials.
Freeman
T B
TB
University of South Florida, Division of Neurosurgery, Tampa 33606, USA.
Vawter
D
D
Goetz
C G
CG
Leaverton
P E
PE
Hauser
R A
RA
Sanberg
P R
PR
Godbold
J H
JH
Olanow
C W
CW
D017690:Cell Transplantation / Q000592:standards*; D018849:Controlled Clinical Trials as Topic / Q000592:standards; D013502:General Surgery; D006801:Humans