Infliximab therapy of relapsing tracheal stenosis in a pediatric patient with granulomatosis with polyangiitis: a case report - Schnell, Alexander; Ruppel, Renate; Tremel, Christina; Galiano, Matthias; Meßbacher, Maria-Elena; Krickau, Tobias (Friedrich-Alexander-Universität Erlangen-Nürnberg, 2022)