Elder, G. H., L. Gouya, S. D. Whatley, H. Puy, M. N. Badminton, and J. C. Deybach. “The Molecular Genetics of Erythropoietic Protoporphyria”. Cellular and Molecular Biology, vol. 55, no. 2, July 2009, pp. 118-26, https://www.cellmolbiol.org/index.php/CMB/article/view/1095.