wikimedia
/
wikidata
/
Login
Register
TriplyDB
Wikidata
Browser
Table
SPARQL
Graphs
1
1
Services
1
1
Assets
0
0
Insights
Schema
BETA
Class frequency
Class hierarchy
J.JCLINEPI.2009.04.005
J.JCLINEPI.2009.04.005
http://dx.doi.org/10.1016/J.JCLINEPI.2009.04.005
Meta-analysis of well-designed nonrandomized comparative studies of surgical procedures is as good as randomized controlled trials.
P356
Q35000180-2E4ADDC9-7D18-4E8D-92D0-DA230F309CE3
P356
J.JCLINEPI.2009.04.005
http://dx.doi.org/10.1016/J.JCLINEPI.2009.04.005