Text and Data Mining valid from 2019-03-18
Received: 22 January 2019
Accepted: 8 March 2019
First Online: 18 March 2019
Ethics approval and consent to participate
: The study conformed with the rules of Good Clinical Practice and its protocol was approved by the Local Bioethics Committee at Collegium Medicum, Nicolaus Copernicus University in Torun, and written informed consent was sought from each patient or her next of kin.
: Not applicable.
: The authors declare that they have no competing interests.
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