S2383 The Successful Use of a High-Dose Immunosuppression Combination Regimen for the Management of Refractory IgG4 Sclerosing Cholangitis With Progressive Multisystemic Involvement: A Case Report - Pamidimukkala, Ujwala; Aitcheson, Gabriella; Rosenheck, Michael; Fatima, Hala; Obaitan, Itegbemie (The American journal of gastroenterology, 2024)