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Joubert JJ, Prozesky OW, Lourens JG, van Straten AM, Theron JW, Swanevelder C, Meenehan GM, van der Merwe CA.Joubert JJ, et al. Among authors: lourens jg.S Afr Med J. 1985 Mar 30;67(13):500-2.S Afr Med J. 1985.PMID: 3983734