1. Department of Neurosurgery St. Marianna University School of Medicine Kawasaki Municipal Tama Hospital Kawasaki Japan
2. Emergency and Disaster Center St. Marianna University School of Medicine Kawasaki Municipal Tama Hospital Kawasaki Japan
3. Medical Safety Control Section St. Marianna University School of Medicine Kawasaki Municipal Tama Hospital Kawasaki Japan
4. Department of Digestive and Hepatology Medicine St. Marianna University School of Medicine Kawasaki Municipal Tama Hospital Kawasaki Japan