Funding for this research was provided by:
Shanghai Municipal Science and Technology Commission Guidance Project, P.R. China (14411966000)
Beijing Society for the prevention and treatment of breast cancer research foundation
Text and Data Mining valid from 2018-04-19
Received: 14 August 2017
Accepted: 15 April 2018
First Online: 19 April 2018
Ethics approval and consent to participate
: This study was conducted inaccordance with the ethical standards of the Declaration of Helsinki and was approved by the Ethics Committee of Fudan University Shanghai Cancer Center. Written human subject consent was not necessary, because this study was based on the retrospective chart review. The institution review board of Fudan University Shanghai Cancer Center approved the waiver.
: The authors declare that they have no competing interest.
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