Liang, Jieyu
Guo, Hongbin
Guo, Jingyuan
Tan, Juyu
Hu, Yihe
Li, Kanghua
Wang, Min
Article History
First Online: 22 May 2019
Compliance with ethical guidelines
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: J. Liang, H. Guo, J. Guo, J. Tan, Y. Hu, K. Li and M. Wang declare that they have no competing interests.
: All procedures performed in studies involving human participants or on human tissue were in accordance with the ethical standards of the institutional and/or national research committee and with the 1975 Helsinki declaration and its later amendments or comparable ethical standards. The current retrospective study was approved by the Ethics Committee of XiangYa hospital of Central South University and informed consent was obtained from each patient. Written informed consent for publication of the clinical details and clinical images was obtained from all patients involved.