@article{doi:,
author = {Kaufman, John D.},
title = {The Osteoporosis Primer.},
journal = {The Journal of Bone & Joint Surgery},
volume = {83},
number = {4},
pages = {639-e-639},
year = {2001},
doi = {},
URL = { + http://dx.doi.org/},
eprint = {}
}