title: Improved vitamin D status despite allocation to placebo in a tuberculosis treatment trial: contamination bias?
authors: Adrian R
authors: AR
authors: Martineau
authors: Christopher J
authors: CJ
authors: Griffiths
authors: Geoffrey E
authors: GE
authors: Packe
mesh_terms: D000995:Antitubercular Agents / Q000627:therapeutic use*; D015982:Bias; D006801:Humans; D014397:Tuberculosis, Pulmonary / Q000097:blood* / Q000188:drug therapy*; D014807:Vitamin D / Q000031:analogs & derivatives* / Q000097:blood / Q000627:therapeutic use*; D014815:Vitamins / Q000627:therapeutic use*
chemical_list: D000995:Antitubercular Agents; D014815:Vitamins; D014807:Vitamin D; C104450:25-hydroxyvitamin D