BibTex format
@article{Joffe:2011:10.1016/j.ypmed.2011.07.011,
author = {Joffe, M},
doi = {10.1016/j.ypmed.2011.07.011},
journal = {PREVENTIVE MEDICINE},
pages = {246--249},
title = {The gap between evidence discovery and actual causal relationships},
url = {http://dx.doi.org/10.1016/j.ypmed.2011.07.011},
volume = {53},
year = {2011}
}