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Funding
Funding for this research was provided by:
Science and Technology on Information Transmission and Dissemination in Communication
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License Information
Text and Data Mining valid from 2019-05-28
Version of Record valid from 2019-05-28
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Article History
Received: 19 February 2019
Accepted: 10 April 2019
First Online: 28 May 2019
Competing interests
: The authors declare that they have no competing interests.
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