Inclusion Criteria:  Adults, 18 years of age or older, who have completed 6 months from time of their burn injury ≥ 10% TBSA, ≥ 65 years of age and Burn Surgery for Wound Closure ≥ 20% TBSA, 18 - 64 of age and Burn Surgery for Wound Closure Electrical high voltage / lightning and Burn Surgery for Wound Closure Hand burn and/or face burn, and/or feet burn and Burn Surgery for Wound Closure May speak English or Spanish Vit. D deficiency  Exclusion Criteria:  Patients with parathyroid disease, severe liver dysfunction, sever kidney dysfunction, which are not caused by the burn injury Patients with malignant tumors Patients not meeting the inclusion criteria