between january and april 1984 , 229 of 448 male patients with urethritis at the choong-ku venereal disease clinic in seoul had positive urethral cultures : 66 for penicillinase-producing neisseria gonorrhoeae ( ppng ) and 163 for non-penicillinase-producing n. gonorrhoeae ( non-ppng ) .
C0041976
urethritis
C0041967
urethral