1. Takahito Suemasu, MD, Department of Breast and Endocrine Surgery, National Center for Global Health and Medicine, Tokyo, Japan; Akihiko Shimomura, MD, PhD, and Chikako Shimizu, MD, PhD, Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo, Japan; and Kazuki Hashimoto, MD, and Dai Kitagawa, MD, PhD, Department of Breast and Endocrine Surgery, National Center for Global Health and Medicine, Tokyo, Japan