Article History
Received: 30 January 2018
Revised: 21 June 2018
Accepted: 28 June 2018
First Online: 6 July 2018
Compliance with Ethical Standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in this study involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki declaration and its later amendments or comparable ethical standards. The study protocol was approved by the Institutional Review Board at the University of Houston (Protocol ID: 15289-02 - 6020).