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Letter to the Editor

Methodological and statistical questions regarding a study on hair nickel and chromium

Pages 232-234 | Received 01 Apr 2018, Accepted 14 Nov 2018, Published online: 08 Mar 2019

References

  • Jamshidi S, Rahmati Kamel M, Mirzaie M, et al. Evaluation of scalp hair nickel and chromium level changes in patients with fixed orthodontic appliance: a one-year follow-up study. Acta Odontol Scand. 2018;76:1–5. doi:0.1080/00016357.2017.1372624.
  • Amini F, Mollaei M, Harandi S, et al. Effects of fixed orthodontic treatment on hair nickel and chromium levels: a 6-month prospective preliminary study. Biol Trace Elem Res. 2015;164:12–17.

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