@article{doi:10.1001/jama.1979.03300220080045, title = {SElected abstracts}, journal = {JAMA}, volume = {242}, number = {22}, pages = {2480-2490}, year = {1979}, doi = {10.1001/jama.1979.03300220080045}, URL = { + http://dx.doi.org/10.1001/jama.1979.03300220080045}, eprint = {/data/Journals/JAMA/8955/jama_242_22_045.pdf} }