Klug E Q, Raal F J
Netcare Sunninghill and Sunward Park hospitals, Gauteng Province, South Africa; School of Clinical Medicine, Faculty of Health Sciences, University of the Witwatersrand, Johannesburg, South Africa; Division of Cardiology, Charlotte Maxeke Johannesburg Academic Hospital, South Africa.
S Afr Med J. 2020 Oct 28;110(11):13126. doi: 10.7196/SAMJ.2020.v110i11.15191.