Mushtaq, Amna, et al. “Antioxidant Enzyme Activity and Malondialdehyde Concentration in Patients With Urticaria Induced By Non Steroidal Anti-Inflammatory Drugs”. Annals of Punjab Medical College, vol. 6, no. 2, Dec. 2012, pp. 110-4, doi:10.29054/apmc/2012.435.