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. 2021 Jun 11;21:258. doi: 10.1186/s12886-021-02018-x

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© The Author(s) 2021

Open AccessThis 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.

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Fig. 1 — The WeChat Software Interface for Making Appointments of Screening for Retinopathy of Prematurity. 1a.The WeChat app was designed for smartphone or i-pad. Parents could conduct online consultation through entering into the official website of hospital WeChat public account. 1b.Parents could scan the two-dimensional code to make appointments online.1c.The information which parents need complete in the reservation interface when making an online appointment