Zhang, Wei http://orcid.org/0000-0002-8706-6082
Article History
Received: 15 February 2020
Accepted: 17 February 2020
First Online: 3 March 2020
Compliance with ethical standards
:
: The author has no conflicts of interest to disclose.
: 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.