What does OIS stand for?
OIS stands for "Open internal sphincterotomy"
How to abbreviate "Open internal sphincterotomy"?
"Open internal sphincterotomy" can be abbreviated as OIS
What is the meaning of OIS abbreviation?
The meaning of OIS abbreviation is "Open internal sphincterotomy"
What does OIS mean?
OIS as abbreviation means "Open internal sphincterotomy"
