Funding for this research was provided by:
Text and Data Mining valid from 2019-10-15
Received: 14 May 2019
Revised: 16 July 2019
Accepted: 29 July 2019
First Online: 15 October 2019
Compliance with ethical standards
: The authors declare that they have no conflicts of interest.
: All procedures performed in studies involving human participants were carried out in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Informed consent was waived for individual participants included in the study. The study was approved by the local Institutional Review Board (IRB) and HIPAA compliant.