@article{doi:10.1001/archinternmed.2011.557,
title = {PRickly pear—galapagos islands},
journal = {Archives of Internal Medicine},
volume = {171},
number = {22},
pages = {1988},
year = {2011},
doi = {10.1001/archinternmed.2011.557},
URL = { + http://dx.doi.org/10.1001/archinternmed.2011.557},
eprint = {/data/Journals/INTEMED/22535/iir15020-1-1_1988_1988.pdf}
}