Text and Data Mining valid from 2019-12-01
Received: 16 June 2019
Accepted: 21 September 2019
First Online: 5 December 2019
Ethics approval and consent to participate
: The ethical approval was taken from the Faculty of Medicine, Ain Shams University, research ethics committee FMASU MD 127/201 and written consent to participate is available upon request with the corresponding author.
: Consent for publication is not applicable.
: The authors declare that they have no competing interests.