@misc{misc973703ab,
title   = {Vitamin D system is altered in breast cancer patients},
author = {Lyra, E. C. and Katayama, M. L. H. and Silva, I. A. and Nonogaki, S. and Goes, J. C. S. and Brentani, M. M. and Folgueira, M. A. A. K.},
year = {2003},
booktitle   = {Annual San Antonio Cancer Symposium}
}