Patients undergo blood sample collection to assess pre-albumin levels at baseline and at weeks 4 and 24. Patients also undergo assessment of body composition, lean body mass, and percentage of body fat at baseline and at weeks 4 and 24 and assessment of weight and height at baseline and at weeks 4, 8, 12, 16, 20, and 24. Patients also complete a food diary twice a week during study treatment.