Funding for this research was provided by:
Received: 23 January 2019
Accepted: 5 March 2019
First Online: 3 April 2019
Ethics approval and consent to participate
: The study was performed in accordance with the World Medical Association Declaration of Helsinki in that consent was obtained for the collection and analysis of human tissue in all involved archives.
: Not applicable.
: The authors declare that they have no competing interests.
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