Text and Data Mining valid from 2018-05-16
Received: 11 October 2017
Accepted: 30 April 2018
First Online: 16 May 2018
Ethics approval and consent to participate
: This study was approved by the King Abdullah International Medical Research Center (KAIMRC/ Ministry of National Guard Health Affairs- Institutional Review Board. The original trial was registered at ISRCTN and assigned the number ISRCTN07413772. The consent for the present analysis was waived because of the observational nature of the study.
: The authors have no financial or non-financial competing interests to declare.
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