Received: 17 May 2018
Accepted: 30 April 2019
First Online: 14 May 2019
Ethics approval and consent to participate
: This retrospective study received ethical approval from the Walailak Ethical Committee (WU-EC-MD-0-098-60). Access to the data including learning materials, course evaluation results, and learning outcomes was permitted by School Of Medicine, Walailak University.
: Not applicable.
: The authors declare that they have no competing interests.
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