I'm guessing Leo means previously untreated for OM??? It's a little confusing.
"As we engaged in discussions and visited the hospital, we learned that most patients with Head and Neck cancer had been previously treated elsewhere (ineligible patients). We always need untreated patients for this study and those patients often first go to a local hospital. In addition for the few newly diagnosed patients there was a competing trial ongoing at the hospital. To learn all this took some time."
“I am at the moment writing a lengthy indictment against our
century. When my brain begins to reel from my literary labors, I
make an occasional cheese dip.” John Kennedy Toole, A
Confederacy of Dunces