Erratum to: Calcium vitamin D3 supplementation in clinical practice: side effect and satisfaction
© The Author(s). 2017
Received: 13 September 2017
Accepted: 13 September 2017
Published: 18 September 2017
The original article was published in Journal of Diabetes & Metabolic Disorders 2016 15:5
This article  was unintentionally published twice in this journal, by the same authors. The following should be considered the version of record and used for citation purposes: "Sanaei et al., Calcium vitamin D3 supplementation in clinical practice: side effect and satisfaction, Journal of Diabetes & Metabolic Disorders (2016) 15:5, 10.1186/s40200-016-0227-9". The duplicate "Sanaei et al., Calcium vitamin D3 supplementation in clinical practice: side effect and satisfaction, Journal of Diabetes & Metabolic Disorders (2016) 15:9, 10.1186/s40200-016-0231-0" is to be ignored. Editor-in-Chief Prof Bagher Larijani apologizes to the readers of the journal for not detecting the duplication during the publication process.
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