Just looking at your description in the app store, it says that it gives people the "ability to find the nearest emergency room" not that it "provides a visualization of publicly accessible data". ie. your claim in your app description is different to what your app actually does. It is natural that you want to inflate the merits of your app because you want people to download it. But that is exactly the sort of thing that will get you into trouble in court, I would imagine. (IANAL, etc).