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To-Figueras J, Badenas C, Mascaro JM, Madrigal I, Merino A, Bastida P, Lecha M, Herrero C (2007). "Study of the genotype-phenotype relationship in four cases of congenital erythropoietic porphyria". Blood Cells Mol. Dis. 38 (3): 242—6. doi:10.1016/j.bcmd.2006.12.001. PMID17270473.