BibTex format
@article{Johnston:2019:10.1136/bmj.l4668,
author = {Johnston, S and St, Hill M},
doi = {10.1136/bmj.l4668},
journal = {BMJ-BRITISH MEDICAL JOURNAL},
title = {Ivor Norman Lennox Johnston OBITUARY},
url = {http://dx.doi.org/10.1136/bmj.l4668},
volume = {366},
year = {2019}
}