 Verifying the eligibility of patients for participation in the study will be done through reviewing data in medical history, physical examination and investigations included in the patients medical records. Acquired immuno-deficiency syndrome AIDS status of the participating subject will be determined by reviewing HIV ELISA screening test, reported in the subjects medical records as well. Measurements of weight and height for BMI calculation will be taken and recorded during the initial clinic visit at the center for liver diseases for all patients who agree to participate and fulfill the inclusion and exclusion criteria. Weight measure will be taken while patient is in light underwear and without shoes, while standing with his arms lying alongside the body, and in apnea fixed at midexpiratory phase while height measure will be taken by a wall-mounted stadiometer and recorded to the nearest cm. 