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Peters FP, Sommer A, Vermeulen A, Cheriex EC, Kho TL.Peters FP, et al. Among authors: cheriex ec.Postgrad Med J. 1997 Nov;73(865):710-2. doi: 10.1136/pgmj.73.865.710.Postgrad Med J. 1997.PMID: 9519183Free PMC article.Review.