Funding for this research was provided by:
National Natural Science Foundation of China (81788104, 81630044, 81601432, 81550023, 81325019, 81771763, 81273312, 91542000)
Chinese Academy of Medical Science Innovation Fund for Medical Sciences (CIFMS2017-12M-1-008, 2016-12M-1-003, 2017-I2M-3-011, 2016-12M-1-008)
National Key Research and Development Program: “Precise Medical Research” (2016YFC0903900)
Received: 3 December 2017
Accepted: 12 March 2018
First Online: 10 April 2018
Ethics approval and consent to participate
: The original study protocol was approved by the Peking Union Medical College Hospital (PUMCH) ethical review board, and ethical approval for this follow-up study was obtained with the original study, thus further approval was not required. Written informed consent was obtained from each individual.
: Not applicable.
: The authors declare that they have no competing interests.
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