@article{doi:10.1001/archinte.1969.00300120100021,
author = {Paul O},
title = {PRactical electrocardiography, ed 4.},
journal = {Archives of Internal Medicine},
volume = {123},
number = {2},
pages = {212},
year = {1969},
doi = {10.1001/archinte.1969.00300120100021},
URL = { + http://dx.doi.org/10.1001/archinte.1969.00300120100021},
eprint = {/data/Journals/INTEMED/15729/archinte_123_2_021.pdf}
}