Recruitment of abundant NK cells to the PFAPA tonsils support the crucial role of innate immunity in pathogenesis of PFAPA syndrome. Issue 1 (December 2015) - Chiesa, S; Caorsi, R; Ingrosso, I; Bellora, F; Penco, F; Bertoni, A; Pastorino, C; Omenetti, A; Finetti, M; Borghini, S; Sementa, A; D'Agostino, R; et al.