1. Department of Plastic Surgery; Osaka University Graduate School of Medicine; Osaka Japan
2. Department of Plastic and Reconstructive Surgery; Osaka Prefectural Hospital Organization, Osaka International Cancer Institute; Osaka Japan
3. Department of Head and Neck Surgery; Osaka Prefectural Hospital Organization, Osaka International Cancer Institute; Osaka Japan
4. Department of Gastroenterological Surgery; Osaka Prefectural Hospital Organization, Osaka International Cancer Institute; Osaka Japan
5. Department of Gastroenterological Surgery; Osaka University Graduate School of Medicine; Osaka Japan