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de Villiers JN, Kotze MJ, van Heerden CJ, Sadie A, Gardner HF, Liebenberg J, van Zyl R, du Plessis L, Kimberg M, Frank J, Warnich L.de Villiers JN, et al. Among authors: warnich l.Exp Dermatol. 2005 Jan;14(1):50-5. doi: 10.1111/j.0906-6705.2005.00228.x.Exp Dermatol. 2005.PMID: 15660919