Funding for this research was provided by:
National Natural Science Foundation of China (30860278, 81160025, 81560075)
Leading Talent Program of Yunnan Province (L-201203)
Department of Science and Technology of Yunnan Province (2011CI 057)
Joint Special Funds for the Department of Science and Technology of Yunnan Province-Kunming Medical University (2012FB005)
Yunnan Provincial Department of Education (ZD2010007)
Received: 22 November 2016
Accepted: 30 January 2018
First Online: 20 February 2018
Ethics approval and consent to participate
: This study was approved by the Institutional Research Ethics Committee of Kunming Medical University and followed the guidelines of the Declaration of Helsinki. All study participants were of self-reported Han ancestry and signed informed consent forms.
: Not applicable.
: The authors declare that they have no competing interests.
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