Received: 26 September 2019
Accepted: 11 March 2020
First Online: 20 May 2020
Compliance with Ethical Standards
: The authors and coauthors declare that they have no conflict of interest that affects this study.
: An approval was taken from the Ethical Committee, of Ilam University of Medical Sciences, Iran. Consent was taken from all the participants or their guardians before being enrolled in the study. All were informed of the purpose of the collection of samples, sharing in the study was selective.