Funding for this research was provided by:
China Scholarship Council (201506220176)
Text and Data Mining valid from 2019-04-08
Received: 18 April 2018
Accepted: 28 March 2019
First Online: 8 April 2019
Ethics approval and consent to participate
: The research proposal was reviewed by the Medical Ethics Committee of the Erasmus University Medical Center. Based on their review, the Committee concluded that the Dutch Medical Research Involving Human Subjects Act did not apply to this research proposal. The Medical Ethics Committee therefore had no objection to the execution of this study (proposal number MEC-2008-250). Written informed consent was obtained from all the study participants.
: Not applicable.
: The authors declare that they have no competing interests.
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