@article{doi:10.1001/jama.281.22.2157, title = {JUne 9, 1999}, journal = {JAMA}, volume = {281}, number = {22}, pages = {2157-2158}, year = {1999}, doi = {10.1001/jama.281.22.2157}, URL = { + http://dx.doi.org/10.1001/jama.281.22.2157}, eprint = {/data/Journals/JAMA/4646/JME90013.pdf} }