KARINCAOGLU, Y., G. DOGAN, E. HAZNECI, and H. OZCAN. “Methotrexate Treatment in a Patient With Chronic Urticaria Resistant to Classical Treatment”. Annals of Medical Research, vol. 5, no. 4, May 2021, pp. 0304-5, http://www.annalsmedres.org/index.php/aomr/article/view/2693.