Funding for this research was provided by:
National Natural Science Foundation of China (81473547, 81673829)
Received: 3 October 2017
Accepted: 14 January 2018
First Online: 31 January 2018
Ethics approval and consent to participate
: The ethical approval was not necessary in current meta-analysis because our NMA just gathered the RCTs from literature search, this procedure was without deal with any patients’ personal data and harm to any patient.
: Not applicable.
: The authors declare no competing interests in any aspects.
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