v. + therapy >>共 211
undergo 12.85%
use 7.13%
receive 6.93%
begin 3.82%
develop 3.21%
need 2.81%
seek 2.51%
get 2.31%
start 2.21%
provide 2.21%
undergo + n. >>共 573
surgery 38.13%
treatment 9.83%
test 6.70%
operation 3.34%
change 3.27%
chemotherapy 1.80%
therapy 1.51%
training 1.49%
procedure 1.32%
repair 1.12%
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