National Psoriasis Foundation - "The Immune System and Psoriatic Disease". June 24, 2019
Clinical and experimental immunology - "Allergy and the gastrointestinal system". Written by Vighi, G., Marcucci, F., Sensi, L., Di Cara, G., & Frati, F. on September 15, 2018
Frontiers in cellular and infection microbiology - "Bacterial Dysbiosis and Translocation in Psoriasis Vulgaris". Written by Visser, M., Kell, D. B., & Pretorius, E. on February 4, 2019
NHS - "Psoriasis Overview".