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Article History

Received: 6 March 2021

Revised: 19 May 2021

Accepted: 3 June 2021

First Online: 9 July 2021

Competing interests

: The authors declare no competing interests.

: Investigations were undertaken with ethical approval in accordance with the Declaration of Helsinki as updated in the version promulgated in June 2013 and the Singapore Statement on Research Integrity. Ethics approval was received from the University of Cape Town (Faculty of Health Sciences: Human Research Ethics Committee) (no. 203/2013). Informed consent to publish clinical information and pictures was obtained from the affected persons, with a signature from a health professional as a witness.