Funding for this research was provided by:
Taishan Scholars Construction Engineering of Shandong Province (NO. ts20130914)
Medicine and Health Science Technology Development Programme of Shandong Province (NO. 2015WS0226)
Key Research and Development Plan of Shandong Province (NO. GG201709190225)
Received: 23 April 2018
Accepted: 15 August 2018
First Online: 21 August 2018
Ethics approval and consent to participate
: This study was approved by the ethic committee of the Shandong Provincial Qianfoshan Hospital, Shandong University. Six patients signed the informed consents and two patients were not contacted before the submission. Exception to the requirement of informed consent was obtained from the ethic committee due to the retrospective study.
: Written informed consent was obtained from the patients described in cases (case 1, 2, 3, 5, 7and 8) for the publication of their personal and medical information and any accompanying images. A copy of the written consent is available for review by the Editor of this journal.
: The authors declare that they have no competing interests.
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