<qa>  How many CKD patients are seen at the three hospital sites?Planning and preparation of the trial would be conducted over the first 6 weeks. 120 CKD patientsweek are seen at the three hospital sites. 30 of the patients are diabetic and 60 of the patients have a GFR 45 mLmin1.73m2. The investigators estimate vitamin D deficiency to be about 35 based on our pilot study. Recruitment will be over 50 weeks. The total duration of the trial will be 102 weeks. A timeline of the proposed study is described in figure 3. 