When the drugstore went out of business , Todd had acquired enough medical knowledge from his work there to be hired at Chicago 's Michael Reese Hospital as a type of `` security guard '' to stop visitors from bringing in food that was not on the patient 's diet .
When that drugstore went out of business , Todd had learned enough medical knowledge from his work there to be hired at Chicago 's Michael Reese Hospital , as a type of `` security guard '' to stop visitors from bringing in food that was not on each patient 's diet .