<s>
Medical	B-Application
literature	I-Application
retrieval	I-Application
or	O
medical	B-Application
document	I-Application
retrieval	I-Application
is	O
an	O
activity	O
that	O
uses	O
professional	O
methods	O
for	O
medical	O
research	O
papers	O
retrieval	O
,	O
report	O
and	O
other	O
data	O
to	O
improve	O
medicine	O
research	O
and	O
practice	O
.	O
</s>
