inclusion criteria: * aged 18 years and above. * able to understand the content of informed consent and willing to sign the informed consent. * able and willing to complete all the secluded study process during the whole study follow-up period (about 7 months). * axillary temperature ≤37.0℃. * general good health as established by medical history and physical examination.

inclusion criteria: * aged 18 years and above. * able to understand the content of informed consent and willing to sign the informed consent. * able and willing to complete all the secluded study process during the whole study follow-up period (about 7 months). * axillary temperature ≤37.0℃. * general good health as established by medical history and physical examination.

inclusion criteria: - aged 18 years and above. - able to understand the content of informed consent and willing to sign the informed consent. - able and willing to complete all the secluded study process during the whole study follow-up period (about 7 months). - axillary temperature ≤37.0℃. - general good health as established by medical history and physical examination.

inclusion criteria: - aged 18 years and above. - able to understand the content of informed consent and willing to sign the informed consent. - able and willing to complete all the secluded study process during the whole study follow-up period (about 7 months). - axillary temperature ≤37.0℃. - general good health as established by medical history and physical examination.