@misc{9290,
  author = {C. Becker and S. Jick and C. Meier and M. Bodmer},
  title = {Metformin and the risk of head and neck cancer: a case-control analysis},
  year = {2014},
  journal = {Diabetes Obes Metab},
  volume = {16},
  number = {11},
  pages = {1148-54},
  issn = {1462-8902},
  doi = {10.1111/dom.12351},
}