BibTex format
@article{Hodes:2021:10.1136/bmj.n1178,
author = {Hodes, S and Majeed, A},
doi = {10.1136/bmj.n1178},
journal = {BMJ: British Medical Journal},
title = {Using the NHS App as a covid-19 vaccine passport},
url = {http://dx.doi.org/10.1136/bmj.n1178},
volume = {373},
year = {2021}
}