Bassi, Andrea, et al. “Eosinophilic Annular Erythema Due to Certolizumab Pegol Therapy for Rheumatoid Arthritis Post-COVID-19 Vaccine ”. Dermatology Practical & Conceptual, vol. 13, no. 2, Apr. 2023, p. e2023095, https://doi.org/10.5826/dpc.1302a95.