RT Journal Article SR Electronic T1 Flashing red lights: the global implications of COVID-19 vaccination passports JF BMJ Global Health JO BMJ Global Health FD BMJ Publishing Group Ltd SP e006209 DO 10.1136/bmjgh-2021-006209 VO 6 IS 5 A1 Kristin Voigt A1 Evrard Nahimana A1 Anat Rosenthal YR 2021 UL http://gh.bmj.com/content/6/5/e006209.abstract AB