Funding for this research was provided by:
Science and Technology Foundation of Guangdong Province (2014A020212713)
Natural Science Foundation of Guangdong Province (2016A030313365)
National Natural Science Foundation of China (81773545)
Received: 19 December 2018
Accepted: 22 April 2019
First Online: 9 May 2019
Ethics approval and consent to participate
: The small cell lung cancer data from Hui Pan’s published article [CitationRef removed] was used in the manuscript as an example. The ethical statement in the published article is as follows: This retrospective study was approved by the Institutional Review Board of GMUFAH and Cancer Center of Guangzhou Medical University (GMUCC) (GMUFAH approval No: 2017–03; GMUCC approval No: P2017–001).
: The manuscript does not contain any individual person’s data.
: The authors declare that they have no competing interests.
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