Teck Chuan Voo <br/><br/>
Immunity certification for COVID-19 :  ethical considerations / 
Teck Chuan Voo [and sixteen others] 
<br/><br/>Bulletin of the World Health Organization 2021 99(2) 155-161 
<br/><br/><label>Subjects--Topical Terms: </label><br/>COVID-19<br/>Immunity, Humoral<br/>Public Health