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MLA Citation
A Verloes et al.. “Holoprosencephaly-polydactyly ('pseudotrisomy 13') syndrome: a syndrome with features of hydrolethalus and Smith-Lemli-Opitz syndromes. A collaborative multicentre study..” Journal of medical genetics, vol. 28, no. 5, 1991, pp. 297–303. http://access.bl.uk/ark:/81055/vdc_100135539384.0x000041