Corrigendum to: A randomized phase III study comparing trastuzumab emtansine with trastuzumab, pertuzumab and docetaxel in elderly patients with advanced stage HER2-positive breast cancer: Japan Clinical Oncology Group Study (JCOG1607, HERB TEA study). (23rd July 2021) - Shimomura, Akihiko; Tamura, Kenji; Tanaka, Kiyo; Mizutani, Tomonori; Sasaki, Keita; Sekino, Yuta; Sawaki, Masataka; Shien, Tadahiko; Shibata, Taro; Iwata, Hiroji