The effect of COVID‐19 on patients with chronic spontaneous urticaria treated with omalizumab and antihistamines: A cross‐sectional, comparative study. - Bostan, Ecem; Zaid, Fethi; Karaduman, Aysen; Dogan, Sibel; Gulseren, Duygu; Yalici‐Armagan, Basak; Akdogan, Neslihan; Ersoy‐Evans, Sibel; Elcin, Gonca (Journal of Cosmetic Dermatology, 2021)