Text and Data Mining valid from 2020-01-06
Received: 31 October 2019
Accepted: 19 December 2019
First Online: 6 January 2020
Ethics approval and consent to participate
: Institutional review board of King Faisal Special Hospital KSA, Number of the project is 2210.Consent to participate is waived as it is a retrospective study.
: Not applicable
: The author declares that he/she has no competing interests.