Alhajj, Mohammed Nasser http://orcid.org/0000-0003-4477-3024
Halboub, Esam
Khalifa, Nadia
Amran, Abdullah G.
Reissmann, Daniel R.
Abdullah, Abbas G.
Assad, Mounzer
Al-Basmi, Abdulghani A.
Al-Ghabri, Fawaz A.
Article History
Received: 15 June 2018
Accepted: 8 November 2018
First Online: 20 November 2018
Ethics approval and consent to participate
: The study was approved by the Ethical Committee of Faculty of Dentistry, Thamar University (Ref: 2016009) and written consent forms were achieved from all participants.
: Not applicable.
: The authors declare that they have no competing interests.
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