Impact of Hepatitis B Virus on Inflammatory Bowel Disease

"Full history taking including:~* Personal history (name, age, sex, occupation, residence, and marital state).~* Complaint.~* Age at diagnosis of IBD.~* Medication history.~* History of hospital admissions and disease flares.~* Disease extent, location, and behavior. (Montreal classification, Truelove-Witts severity index).~* Surgical history (intestinal resection in CD patients and total proctocolectomy in UC patients).~* Follow up duration and mortality.~* Data of endoscopic examination~* Data of laboratory investigations (complete blood picture, HBV serology, liver and kidney function tests, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP))."