Funding for this research was provided by:
National Institute of Arthritis and Musculoskeletal and Skin Diseases (N/A)
Text and Data Mining valid from 2019-11-26
Received: 8 July 2019
Accepted: 13 November 2019
First Online: 26 November 2019
Ethics approval and consent to participate
: This study received ethical approval from the Human Research Ethics Committee of the University of Cape Town (HREC 424–2013).Written informed consent was obtained in the participant’s preferred language prior to enrolment into the study. A waiver of consent was obtained for patients who were deceased prior to the beginning of the study period.
: Not applicable.
: The authors declare that they have no competing interests.