Received: 15 November 2020
Accepted: 3 March 2022
First Online: 28 March 2022
: Informed consent was obtained from all the patients and from the subjects who are under 16 years of age, informed consent was obtained from their parents and/or legal guardian. Our study has been approved by the Ethics Committee of Guangdong Hospital of Traditional Chinese Medicine and it also has been performed in accordance with the Declaration of Helsinki.
: Not applicable.
: The authors have no competing interests as defined by BMC, or other interests that might be perceived to influence the results and/or discussion reported in this paper.