Article History
Received: 9 April 2019
Accepted: 23 August 2019
First Online: 13 September 2019
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the principles of the 1964 Declaration of Helsinki and its later amendments or comparable ethical standards.
: Consent forms were obtained from the parents or guardians of subjects (1–16 years) and participants (above 16 years) in the study.