I suppose they could just go back and study all the new medical information in a academic setting only, skipping any kind of internship like study in hospitals. If they do that part maybe they do it in some hospital that the Venatori control where they can practice mixing the new medical information they learned with magic. Some of the stuff the learned probably doesn't have much use at first, like how to use the latest diagnostic equipment but the medical wizard can use the ideas behind the equipment to find a way to do something similar with magic. What the wizard learns probably has as much to do with ideas for new magics he can develop as stictly learning medical procedures, at least that's one of the possibilities I can think up.
