1. Aoba Okeya, MD, Department of Breast Surgical Oncology, National Center for Global Health and Medicine, Tokyo, Japan; Akihiko Shimomura, MD, PhD, Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo, Japan; Dai Kitagawa, MD, PhD, Department of Breast Surgical Oncology, National Center for Global Health and Medicine, Tokyo, Japan; and Chikako Shimizu, MD, PhD, Department of Breast and Medical Oncology, National Center for Global Health and Medicine, Tokyo, Japan