Text and Data Mining valid from 2018-04-05
Received: 3 October 2017
Accepted: 22 March 2018
First Online: 5 April 2018
Ethics approval and consent to participate
: The research was reviewed and approved by the Ethics Committee of West China Hospital. All procedures in the study involving human participants were performed in accordance with the ethical standards of West China Hospital and/or the national research committee, as well as the 1964 Helsinki Declaration and its later amendments or comparable ethical standards. Before collecting human samples, all participants signed informed consent forms according to our institutional guidelines.
: Not applicable.
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