This being a study published in a journal of trauma medicine, the goal is of the study wasn't necessarily to figure out the cause of the injuries, but how best to treat them. To classify injuries, the doctors divided the face into three zones, as seen above. Just over a fifth of injuries hit above the brow line (zone three), while slightly more than a third of injuries fell from the nose up to the brow line (zone two), and just shy of a third of injuries feel between the chin and the base of the nose (zone one). The rest of the injuries were blasts (which tend to not fall into tidy categories) or injuries that straddled the zones. Including zone three, the forehead zone, this study showed a higher mortality rate for gunshot wounds than others which have come before.