@misc{9714,
  author = {M. Bodmer and C. Meier and S. Krahenbuhl and S. Jick and C. Meier},
  title = {Long-term metformin use is associated with decreased risk of breast cancer},
  year = {2010},
  journal = {Diabetes Care},
  volume = {33},
  number = {6},
  pages = {1304-8},
  issn = {0149-5992},
  doi = {10.2337/dc09-1791},
}