Rubini, N.P.M., et al. “Effectiveness and Safety of Omalizumab in the Treatment of Chronic Spontaneous Urticaria: Systematic Review and Meta-Analysis”. Allergologia Et Immunopathologia, vol. 47, no. 6, Dec. 2019, pp. 515-22, https://all-imm.com/index.php/aei/article/view/264.