Hillan, A., L. Convery-Chan, T. Beer, F. McKenzie, and B. Ricciardo. “Pseudoxanthoma Elasticum Presenting in Teenage Sisters: Case Report and Review of Multisystem Associations.”. European Journal of Pediatric Dermatology, vol. 31, no. 3, Aug. 2021, pp. 155-60, doi:10.26326/2281-9649.31.3.2264.