Correction to: Nutr J (2020) 19:11
https://doi.org/10.1186/s12937-020-0526-3
The author would like to correct some misleading sentences, in inclusion criteria number one and two also in table number one, following the original article [1].
Inclusion criteria #1 under the section Study selection, inclusion criteria on page 2 should read “Studies reporting the effects of vitamin D interventions on iron status as primary or secondary outcomes from single or combined vitamin D supplementation with calcium, iron, and vitamin K were considered. No restrictions were placed on the gender, race, and geographical distribution of the individuals enrolled in the study.”
Inclusion criteria #2 should read “All types of vitamin D supplementation”
Reference
Arabi SM, Ranjbar G, Bahrami LS, Vafa M, Norouzy A. The effect of vitamin D supplementation on hemoglobin concentration: a systematic review and meta-analysis. Nutr J. 2020;19(1):11 https://doi.org/10.1186/s12937-020-0526-3.
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Arabi, S.M., Ranjbar, G., Bahrami, L.S. et al. Correction to: The effect of vitamin D supplementation on hemoglobin concentration: a systematic review and meta-analysis. Nutr J 20, 21 (2021). https://doi.org/10.1186/s12937-021-00679-4
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DOI: https://doi.org/10.1186/s12937-021-00679-4