Funding for this research was provided by:
National Natural Science Foundation of China (81470657)
Article History
Received: 24 October 2018
Revised: 18 December 2018
Accepted: 19 December 2018
First Online: 14 January 2019
Compliance with ethical standards
: The authors have full control of all primary data and we agree to allow Graefeās Archive for Clinical and Experimental Ophthalmology to review our data upon request. No author has a proprietary or commercial interest in the materials or methods mentioned here.
: The authors declare that they have no conflict of interests.
: All procedures performed in studies involving human participants were in accordance with the ethical standards of the institutional and/or national research committee and with the 1964 Helsinki Declaration and its later amendments or comparable ethical standards.
: Informed consent was obtained from all individual participants included in the study.
: The sponsor or funding organization had no role in the design or conduct of this research.