Zhang, Wei
Article History
Received: 21 February 2020
Accepted: 23 February 2020
First Online: 2 March 2020
Compliance with ethical standards
:
: All authors have read and approved the final version of the manuscript and agreed to submit it for consideration for publication in the journal. There are no ethical/legal conflicts involved in the article.
: Written consent from the patient was waived, because of entirely anonymized images from which the individual cannot be identified.
: The author confirms that he has read the Journal’s position on issues involved in ethical publication and affirms that this report is consistent with those guidelines.