Abbreviations
PSC: primary sclerosing cholangitis, CBD: common bile duct, ERCP: Endoscopic retrograde cholangiopancreatography, GA: gestational age, AST: aspartate aminotransferase, ALT: alanine aminotransferase, GGT: gamma-glutamyl transpeptidase, MRCP: magnetic resonance cholangiopancreatography, MRI: magnetic resonance imaging, PEG: polyethylene glycol, PFIC: (progressive familial intrahepatic cholestasis), NEC: necrotizing enterocolitis