Strong mesangial IgA staining—does it always refer to IgA nephropathy in a patient with proteinuria and hematuria? Answers. - Altun, Ilayda; Saygılı, Seha; Canpolat, Nur; Özlük, Yasemin; Hürdoğan, Özge; Yeşil, Gözde; Çalışkan, Salim; Sever, Lale (Pediatric Nephrology, 2021)