BibTex format
@article{Toledano:2015:10.1371/journal.pone.0131521,
author = {Toledano, MB and Smith, RB and Brook, JP and Douglass, M and Elliott, P},
doi = {10.1371/journal.pone.0131521},
journal = {PLOS One},
title = {How to Establish and Follow up a Large Prospective Cohort Study in the 21st Century - Lessons from UK COSMOS.},
url = {http://dx.doi.org/10.1371/journal.pone.0131521},
year = {2015}
}