Validation study of Oxford Classification of IgA Nephropathy: the significance of extracapillary hypercellularity and mesangial IgG immunostaining. - Ştefan, Gabriel; Ismail, Gener; Stancu, Simona; Zugravu, Adrian; Andronesi, Andreea; Mandache, Eugen; Mircescu, Gabriel (Pathology International, 2016)