Trainee Doctor at Fujisawa Shounandai Hospital: Fujisawa, Japan (2012-2014) Senior Resident in Surgery at Yokohama City University Medical Center: Yokohama, Japan (2014-2015) Medical staff of Department of Surgery at Japanese Red Cross Hadano Hospital: Hadano, Japan (2015-2016) Medical staff of Department of Breast and Endocrine Surgery at Kanagawa Cancer Center: Yokohama, Japan (2016-2019) Medical staff of Department of Surgery at Ito Hospital: Tokyo, Japan (2019-2022) Assistant Professor of Department of Breast and Thyroid Surgery at Yokohama City University Medical Center: Yokohama, Japan (2022-Present)