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Authors
Jia, Shuang-zheng
Zhang, Jun-ji
Liang, Zhi-yong
Yang, Jun-jun
Xiang, Yang
Jia, Cong-wei
Leng, Jin-hua http://orcid.org/0000-0002-5414-9375
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Funding
Funding for this research was provided by:
the National Key R&D Program of China (2017YFC1001200)
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Article History
Received: 25 March 2018
Accepted: 14 November 2018
First Online: 23 November 2018
Ethics approval and consent to participate
: As a retrospective study mainly based on medical records, verbal informed consent was obtained from all the patients at their follow-up interviews, and the study was conducted in accordance with the Declaration of Helsinki Principles and regulations of our institute. The Institutional Review Board at the Peking Union Medical College Hospital approved the study design and this form of consent.
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.
