Received: 3 September 2018
Revised: 4 February 2019
Accepted: 1 March 2019
First Online: 19 March 2019
Ethics approval and consent to participate
: Local ethical committee approved all research activities involving human subjects (collection of samples and following use for the studies). Patients gave written informed consent to collection of samples of human material for research.No animals were used in this study.
: Not applicable
: The authors declare that they have no competing interests.
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