1. Department of Head and Neck Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan;
2. Department of Plastic Surgery, Miyagi Cancer Center, Natori, Miyagi, Japan;
3. Department of Nursing, Miyagi Cancer Center, Natori, Miyagi, Japan;
4. Department of Diagnostic Radiology, Miyagi Cancer Center, Natori, Miyagi, Japan