Received: 2 February 2018
Accepted: 16 August 2018
First Online: 25 August 2018
Ethics approval and consent to participate
: This case study was approved by the Medical Ethics Committee of the Beijing Chao-Yang Hospital, Capital Medical University.
: Written informed consent for publication of this report and of accompanying images was obtained from the patient. A copy of the consent form is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.
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