Text and Data Mining valid from 2018-05-24
Received: 19 April 2018
Accepted: 16 May 2018
First Online: 24 May 2018
Ethics approval and consent to participate
: The study was reviewed and approved by the Ethics Committee of Atomic Energy Commission of Syria. Written informed consent was obtained from all participants. If participant was a minor, parental consent was taken.
: Written consent for publication was obtained from all the participants.
: The authors declare that they have no competing interests.
: Springer Nature remains neutral with regard to jurisdictional claims in published maps and institutional affiliations.