BibTex format
@article{Osama:2021:10.1136/bmj.n861,
author = {Osama, T and Razai, MS and Majeed, A},
doi = {10.1136/bmj.n861},
journal = {BMJ},
pages = {n861--n861},
title = {Covid-19 vaccine passports: access, equity, and ethics.},
url = {http://dx.doi.org/10.1136/bmj.n861},
volume = {373},
year = {2021}
}