Fotis, L. Prountzos, S. Giannouli, G. Papaevangelou, V., Facial necrotic ulcerative lesions in an adolescent female with granulomatosis with polyangiitis (GPA), Bailliere's Clinical Rheumatology, (39), 3519-3520, 2020, Springer Science and Business Media Deutschland GmbH, 0950-3579