Correction to: Value of endometrial echo pattern transformation after hCG trigger in predicting IVF pregnancy outcome: a

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(2020) 18:92

CORRECTION

Open Access

Correction to: Value of endometrial echo pattern transformation after hCG trigger in predicting IVF pregnancy outcome: a prospective cohort study Zhaojuan Hou1,2, Qiong Zhang1,2, Jing Zhao1,2, Aizhuang Xu1,2, Aihua He1,2, Xi Huang1,2, Shi Xie1,2, Jing Fu1,2, Lan Xiao1,2 and Yanping Li1,2* Correction to: Reprod Biol Endocrinol 17, 74 (2019) https://doi.org/10.1186/s12958-019-0516-5 Following publication of the original article [1], the authors reported an error in the order of the figures. The Fig. 1 published is supposed to be Fig. 5. The Fig. 2 published is supposed to be Fig. 1. The Fig. 3 published is supposed to be Fig. 2. The Fig. 4 published is supposed to be Fig. 3. The Fig. 5 published is supposed to be Fig. 4. The correct order of the figures are as follows: The publishers apologise for this error.

Reference 1. Hou Z, Zhang Q, Zhao J, et al. Value of endometrial echo pattern transformation after hCG trigger in predicting IVF pregnancy outcome: a prospective cohort study. Reprod Biol Endocrinol. 2019;17:74 https://doi.org/ 10.1186/s12958-019-0516-5.

The original article can be found online at https://doi.org/10.1186/s12958019-0516-5. * Correspondence: [email protected] 1 Department of Reproductive Medicine, Xiangya Hospital, Central South University, 87 Xiangya Road, Changsha City, Hunan Province 410008, People’s Republic of China 2 Clinical Research Center For Women’s Reproductive Health In Hunan Province, 87 Xiangya Road, Changsha City, Hunan Province 410008, People’s Republic of China © The Author(s). 2020 Open 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/. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated in a credit line to the data.

Hou et al. Reproductive Biology and Endocrinology

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Fig. 1 Endometrial echogenicity in infertile women after hCG trigger during COH cycles. (A) Endometrial echogenicity with non-pregnant women. (B) Endometrial echogenicity with pregnant women. The black arrow points to the endometrium-myometrium interfaces. a, HCG day; b, OPU + 1; c, OPU + 2; d, OPU + 3

Hou et al. Reproductive Biology an