Xu, Zhifeng http://orcid.org/0000-0002-9198-9031
Zheng, Shaoyan
Pan, Aizhen
Cheng, Xiaofang
Gao, Mingyong
Article History
Received: 15 April 2019
Accepted: 16 July 2019
First Online: 1 August 2019
Change Date: 4 February 2020
Change Type: Correction
Change Date: 4 February 2020
Change Type: Correction
Change Details: Figure captions of Figures 2, 3, and 4 were incorrect in the original version of this article.
Change Details: Figure captions of Figures��2, 3, and 4 were incorrect in the original version of this article.
Compliance with ethical standards
:
: The authors declare that they have no conflict of interest.
: This prospective study was approved by the institutional review board (Ethics committee of Foshan First People’s Hospital and Ethics Committee of Shantou Central Hospital) and performed between August 2013 and March 2017. Informed consent was obtained from all individual participants included in the study.