Received: 10 March 2020
Accepted: 23 April 2020
First Online: 11 May 2020
Ethics approval and consent to participate
: They all gave their written informed consent for inclusion in the study. All patients were warned of the risks of treatment, especially concerning the possibility of developing distant metastases after NAC. The study protocol was approved by the medical ethics committee of Mie University Hospital (ID2954, UMIN ID: 000030980), and the study was performed in accordance with the ethical standards established in the 1964 Declaration of Helsinki.
: Not applicable.
: The authors have nothing to disclose on competing interests.