@article{doi:10.1001/jama.1959.03010070027007,
author = {Irvin C and Jr.},
title = {VAlsalva maneuver as a diagnostic aid},
journal = {Journal of the American Medical Association},
volume = {170},
number = {7},
pages = {787-791},
year = {1959},
doi = {10.1001/jama.1959.03010070027007},
URL = { + http://dx.doi.org/10.1001/jama.1959.03010070027007},
eprint = {/data/Journals/JAMA/7994/jama_170_7_007.pdf}
}