Received: 30 August 2018
Accepted: 7 August 2019
First Online: 22 August 2019
Ethics approval and consent to participate
: Written informed consent from the CEO of the hospital to review hospital records was obtained. Written informed consent from the mothers of all patients to perform the Beery-Buktenica test was also obtained.Ethics reference no: 170/2018.The Faculty of Health Sciences Research Ethics Committee approved ethics on 25 April 2018.Contact: Dr. R Sommers; Deputy Chairperson of the Faculty of Health Sciences Research Ethics Committee, University of Pretoria.
: Not applicable
: The authors declare that they have no competing interests.