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Engel U, Breborowicz D, Albrectsen JM, Bøg-Hansen TC, Francis D.Engel U, et al. Among authors: albrectsen jm.APMIS. 1996 Dec;104(12):933-7. doi: 10.1111/j.1699-0463.1996.tb04961.x.APMIS. 1996.PMID: 9048874