@article{doi:10.1001/jama.1989.03420090111043,
author = {Balke B},
title = {Sports medicine: Fitness, training, injuries},
journal = {JAMA},
volume = {261},
number = {9},
pages = {1345},
year = {1989},
doi = {10.1001/jama.1989.03420090111043},
URL = { + http://dx.doi.org/10.1001/jama.1989.03420090111043},
eprint = {/data/Journals/JAMA/9148/jama_261_9_043.pdf}
}