1998, Department of Otorhinolaryngology, Kyushu University 2000, Head and Neck Surgery, National Kyushu Cancer Center 2002, Head and Neck Surgery, National Cancer Center Hospital East 2005, Department of Otorhinolaryngology, Kyushu University 2009, Department of Otorhinolaryngology, Sasebo Kyosai Hospital 2011, Department of Plastic and Reconstructive Surgery, Okinawa Prefectural Chubu Hospital 2014, Department of Plastic and Reconstructive Surgery, Associate Professor, Kyushu University Hospital 2024, Department of Plastic and Reconstructive Surgery, Clinical Professor, Chief, Kyushu University Hospital