BibTex format
@article{Gillon:2012:10.1136/medethics-2011-100385,
author = {Gillon, R},
doi = {10.1136/medethics-2011-100385},
journal = {JOURNAL OF MEDICAL ETHICS},
pages = {197--198},
title = {When four principles are too many: a commentary},
url = {http://dx.doi.org/10.1136/medethics-2011-100385},
volume = {38},
year = {2012}
}