Funding for this research was provided by:
National Natural Science Foundation of China (81500375)
Natural Science Foundation of Shandong Province (ZR2018BH002, ZR2017BH017)
Natural Science Foundation of Shandong Province (CN) (ZR2015HQ001)
Shandong province science and technology development plan (2014GGH218016)
Projects of medical and health technology development program in Shandong province (2014WS0094)
Text and Data Mining valid from 2018-06-28
Received: 27 March 2018
Accepted: 21 June 2018
First Online: 28 June 2018
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