@article{doi:10.1001/jama.2012.8144,
author = {Ioannidis JA},
title = {THe importance of potential studies that have not existed and registration of observational data sets},
journal = {JAMA},
volume = {308},
number = {6},
pages = {575-576},
year = {2012},
doi = {10.1001/jama.2012.8144},
URL = { + http://dx.doi.org/10.1001/jama.2012.8144},
eprint = {/data/Journals/JAMA/24745/jvp120046_575_576.pdf}
}