@article{doi:10.1001/jama.1959.63010120014021, title = {DEnmark}, journal = {Journal of the American Medical Association}, volume = {170}, number = {12}, pages = {1443}, year = {1959}, doi = {10.1001/jama.1959.63010120014021}, URL = { + http://dx.doi.org/10.1001/jama.1959.63010120014021}, eprint = {/data/Journals/JAMA/7999/jama_170_12_021.pdf} }