(ordered by popularity)
randomized
controlled
clinical
new
fair
first
blind
second
prospective
criminal
randomised
public
severe
speedy
therapeutic
open
third
actual
subsequent
mock
sore
recent
comparative
famous
fiery
preliminary
initial
week
worth
formal
civil
day
month
year
double
adequate
pre
thorough
judicial
multicenter
sensational
terrible
multicentre
brief
scale
severest
lengthy
celebrated
bitter
secret
impartial
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