@misc{9440,
  author = {L. Li and S. Setoguchi and H. Cabral and S. Jick},
  title = {Opioid use for noncancer pain and risk of fracture in adults: a nested case-control study using the general practice research database},
  year = {2013},
  journal = {Am J Epidemiol},
  volume = {178},
  number = {4},
  pages = {559-69},
  issn = {0002-9262},
  doi = {10.1093/aje/kwt013},
}