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Maud PJ, Pollock ML, Foster C, Anholm JD, Guten G, Al-Nouri M, Hellman C, Schmidt DH.Maud PJ, et al. Among authors: hellman c.S Afr Med J. 1981 Jan 31;59(5):153-7.S Afr Med J. 1981.PMID: 7006111Review.