de Rooij, F W M, F G Kavelaars, H Koole-Lesuis, and J H P Wilson. 2009. “Evidence for an Ancestral Founder of the Common R116W Mutation in the Hydroxymethylbilane Synthase Gene in Acute Intermittent Porphyria in the Netherlands”. Cellular and Molecular Biology 55 (2):64-69. https://cellmolbiol.org/index.php/CMB/article/view/1089.