Funding for this research was provided by:
the Project of Scientific and Technological Support Plan of Health Commission of Henan Province (201602210)
Shanghai Tasly Pharmaceutical CO.. LTD (No)
Received: 5 June 2019
Accepted: 11 November 2019
First Online: 28 November 2019
Ethics approval and consent to participate
: The study protocol has been approved by the Ethics Committee of Henan Provincial People’s Hospital [NO. 2015 (34)], with the other 65 sites covered by central ethics approval. Ethics permission has been waived to collect informed consent in this registry-based study, although informed consent is to be obtained from eligible patients before registration.
: Not applicable.
: The authors declare that they have no competing interests.