KEYKHOSRAVI, Aghil; MAHMOODI, Rahil. Letter to the Editor: Investigating Hypovitaminosis D and Childhood Nephrotic Syndrome. Journal of Pediatric Nephrology, Tehran, Iran, v. 13, n. 1, 2026. DOI: 10.22037/jpn.v13i1.47762. Disponível em: https://journals.sbmu.ac.ir/jpn/article/view/47762. Acesso em: 8 jul. 2026.