1 Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Mibu, Tochigi 321-0293, Japan; Japanese Red Cross Ashikaga Hospital, Ashikaga, Tochigi, Japan.
2 Japanese Red Cross Ashikaga Hospital, Ashikaga, Tochigi, Japan.
3 Department of Diagnostic and Generalist Medicine, Dokkyo Medical University Hospital, Mibu, Tochigi 321-0293, Japan.