Funding for this research was provided by:
Notsew Orm Sands Foundation
Received: 2 October 2017
Accepted: 16 February 2018
First Online: 1 March 2018
Ethics approval and consent to participate
: The study was approved by The Second Affiliated Hospital of Dalian Medical University with the reference number 2017-20 under the fast approval track of The Second Affiliated Hospital of Dalian Medical University.
: Consent forms of the two deceased cases’ close relatives (in both cases, daughters) were provided.
: The authors declare that they have no competing interests.
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