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Kleijer, W. J.; Hoogeveen, A.; Verheijen, F. W.; Niermeijer, M. F.; Galjaard, H.; O'Brien, J. S.; Warner, T. G. (July 1979). "Prenatal diagnosis of sialidosis with combined neuraminidase and beta-galactosidase deficiency". Clinical Genetics. 16 (1): 60–61. doi:10.1111/j.1399-0004.1979.tb00851.x. ISSN0009-9163. PMID477017. S2CID41124809.