18 years of age or older; Having access to internet and smart phone; No current COVID-19; No pregnancy; No plan to have children in the next 6 months and willing to use at least one effective method of contraception; Signed informed consent form.

18 years of age or older; Having access to internet and smart phone; No current COVID-19; No pregnancy; No plan to have children in the next 6 months and willing to use at least one effective method of contraception; Signed informed consent form.

18 years of age or older; having access to internet and smart phone; No history of current or previous COVID-19; No pregnancy; use of at least one effective method of contraception; Signed informed consent form.

18 years of age or older; having access to internet and smart phone; No history of current or previous COVID-19; No pregnancy; use of at least one effective method of contraception; Signed informed consent form.