Whalley D, Belongie K, Frangiosa T, Krasa H, Mladsi DM, Twiss J, Wolowacz S. Understanding the patient experience of erythropoietic protoporphyria and x-linked protoporphyria: a qualitative study. Poster presented at the ISPOR 2022 Conference; May 15, 2022. Washington, DC. [abstract] Value Health. 2022 Jun; 25(6 S1).