Riaz Hussain Khokhar1, Safdar Ali Perveiz Tunio2, Shahabuddin Rind3, Ghulam Mujtaba Shah4, Ashok Kumar Lohano5, Ghulam Mustafa Jamali6 2020. ENDOSCOPIC DIAGNOSIS OF DUODENAL ULCER FREQUENCY IN CHRONIC LIVER DISEASE, A TERTIARY CARE ASSESMENT . Journal of Peoples University of Medical & Health Sciences Nawabshah. (JPUMHS). 10, 3 (Sep. 2020).