==== Front Sci Rep Sci Rep Scientific Reports 2045-2322 Nature Publishing Group UK London 78836 10.1038/s41598-020-78836-8 Author Correction Author Correction: Umbilical cord extracts improve osteoporotic abnormalities of bone marrow-derived mesenchymal stem cells and promote their therapeutic effects on ovariectomised rats Saito Akira 1 Nagaishi Kanna kanna@sapmed.ac.jp 23 Iba Kousuke 1 Mizue Yuka 23 http://orcid.org/0000-0003-2832-3656Chikenji Takako 23 Otani Miho 3 Nakano Masako 2 Oyama Kazusa 2 Yamashita Toshihiko 1 Fujimiya Mineko 23 1 grid.263171.00000 0001 0691 0855Department of Orthopaedic Surgery, Sapporo Medical University, Sapporo, Japan 2 grid.263171.00000 0001 0691 0855Second Department of Anatomy, Sapporo Medical University, Sapporo, Japan 3 grid.263171.00000 0001 0691 0855Department of Diabetic Cellular Therapeutics, Sapporo Medical University, Sapporo, Japan 9 12 2020 9 12 2020 2020 10 21987© The Author(s) 2020Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.issue-copyright-statement© The Author(s) 2020 ==== Body Correction to: Scientific Reports, 10.1038/s41598-018-19516-6, published online 18 January 2018 This Article contains errors. As a result of a figure assembly error, Figure 3C panel None/WJ(+) is a duplication of panel SDF-1/WJ(−). The correct Figure 3 appears below as Figure 1.Figure 1 The correct version of Figure 3. This change does not affect the conclusions of the Article.