Effect of acute kidney injury on hospital-based outcomes in patients admitted for variceal hemorrhage. Analysis of national inpatient sample database - Zahid Tarar; Muhammad Zafar; Umer Farooq; Faisal Kamal; Faisal Inayat; Yasir Rajwana; Ghulam Ghous; Harleen Chela; Veysel Tahan; Ebubekir Daglilar (Gastroenterology Review)