Text and Data Mining valid from 2020-02-06
Received: 2 September 2019
Accepted: 17 January 2020
First Online: 6 February 2020
Compliance with ethical standards
: All authors declare that they have no conflict of interest.
: One or more authors (SN and SM) received research grant from Kyocera outside the submitted work.
: The study design was approved by the institutional ethics review boards, and all procedures performed were in accordance with the ethical standards of the institutional research committee.