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. 2020 Dec 16;20:512. doi: 10.1186/s12909-020-02431-8

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© The Author(s) 2020

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. 3 — Subjective learning success of the ultrasound teaching videos. The questionnaire’s results for subjective learning success (knowledge expansion, questions 1, 5 and 6 of the questionnaire and practical use, questions 8, 21 and 22 of the questionnaire) are shown according to the response rating scale 1 (does fully apply) to 4 (does not apply) for the abdominal ultrasound video (Panel A) and transthoracic echocardiography video (Panel B). The positive ratings (summarized ratings 1 and 2) are outlined in the diagram as percentage of the completed questionnaires (29 for the transthoracic echocardiography and 27 for the abdominal ultrasound video)