He spent a large amount of time sketching in the hospital and drew inspiration from his experiences there, from the traffic markings on the floors around the operating theatre to sitting in a calm and quiet room in the premature baby unit.
According to reporters and photographers who followed the unit into the room and Wilper's own account given to the AP three years ago, Tojo's house staff and a Japanese doctor were reluctant to help the wounded man until Wilpers pointed his gun at the physician and ordered him to start treatment.