Received: 7 December 2020
Accepted: 1 April 2021
First Online: 9 April 2021
: All procedures of the present study were in accordance with the ethical standards of the institutional and national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. The study was approved by the Ethical Committee of Qilu Hospital of Shandong University (KYLL-2016-231). The written informed consent was obtained from all patients.
: The written informed consent to publish the images and clinical details of the participants was obtained and copy of the written consent is available for review by the editor of this journal.
: The authors declare that they have no competing interests.