title: Post-traumatic nitrogen metabolism in the elderly.
mesh_terms: D000368:Aged; D002118:Calcium; D004032:Diet; D005265:Femoral Neck Fractures / Q000378:metabolism*; D005851:Geriatric Nursing; D006801:Humans; D009584:Nitrogen / Q000378:metabolism*; D014807:Vitamin D
chemical_list: D014807:Vitamin D; D009584:Nitrogen; D002118:Calcium