Kuang, Hongxuan
Li, Yonghong
Jiang, Wenhui
Wu, Peiqiong
Tan, Jianhua
Zhang, Haibin
Pang, Qihua
Ma, Shengtao
An, Taicheng
Fan, Ruifang
Funding for this research was provided by:
National Natural Science Foundation of China (41731279)
Article History
Received: 13 August 2019
Revised: 24 September 2019
Accepted: 1 October 2019
First Online: 20 November 2019
Compliance with ethical standards
: This study was approved by the Research Ethics Committee of South China Normal University (No. 2017012). The parent or guardian of each participant signed an informed consent and was required to complete a questionnaire including gender, age, height, weight, lifestyle habits, and passive smoking frequency as well as the past medical history and genetics of their children before sampling.