Received: 27 March 2018
Accepted: 2 January 2019
First Online: 24 January 2019
Ethics approval and consent to participate
: The study was approved by the Ethical Committee of the Iran University of Medical Sciences, Tehran, IR Iran and Keyvan Virology Specialty Laboratory (KVSL).
: Not applicable.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.