Funding for this research was provided by:
Science and Technology Project of Honghuagang District, Zunyi city (Social development field (2020) 01)
Received: 15 March 2022
Accepted: 24 June 2022
First Online: 4 October 2022
: This study was approved by the Ethics Committee of the Affiliated Hospital of Zunyi Medical University (the Ethics Approval number is KLLY-2020-030, and the date of ethics approval is 2020.12.31). Written consent was obtained from all patients.
: Not applicable for that section.
: The project is carried out by charging the cost price of Prodom. The product of is commissioned to be produced by Zunyi Lexi Medical Products Co., LTD., which is not profitable at present. We clearly told our subjects (patients) during informed consent that there was a charge for assistance of Prodom. When subjects were asked if they were willing to pay, all the patients agreed to pay for it. We did not encounter any subjects (patients) who refused to pay. We declare that there are no conflicts of interest between any of the authors and the commissioned production company of Prodom, namely, Zunyi Lexi Medical Products Co., LTD., and the project funding department.