Department;
of;
Microbiology,;
the;
Fourth;
Military;
Medical;
University,;
Xi'an,710032;
Department;
of;
Hospital;
Infection;
Control,;
PLA;
General;
Hospital,Beijing,100853;
Department;
of;
Urology,;
the;
First;
Affiliated;
Hospital;
of;
PLA;
General;
Hospital,;
Beijing,;
Postcode:;
100037.;
Department;
of;
Microbiology,;
PLA;
General;
Hospital,;
Beijing,100853;