Received: 18 March 2020
Accepted: 16 June 2020
First Online: 23 June 2020
Ethics approval and consent to participate
: Ethical approval from the Ethics Committee of Shaanxi Provincial People’s Hospital was obtained for this study. Each author certifies that all the investigations were conducted in conformity with ethical principles. Written informed consent was obtained from all participants, caregivers, and patients included in the study.
: All patients and caregivers consented to the publication of their personal data in this article.
: The authors declare that they have no competing interests.