1. Department of Surgery, Southern Tohoku Research Institute for Neuroscience, Southern Tohoku General Hospital, Koriyama, Fukushima 963-8563. Japan
2. Department of Radiation Therapy, Southern Tohoku Research Institute for Neuroscience, Southern Tohoku General Hospital, Koriyama, Fukushima 963-8563. Japan
3. Department of Breast Surgery, Fukushima Medical University School of Medicine, Fukushima, Fukushima 960-1295, Japan