Can stanniocalcin-2 be regarded as a novel non-invasive biomarker of advanced liver steatosis in obese children? A preliminary study - Bobrus-Chociej, Anna; Kopiczko, Natalia; Zdanowicz, Katarzyna; Flisiak-Jackiewicz, Marta; Lebensztejn, Dariusz (Pediatria Polska - Polish Journal of Paediatrics, 2022)