@article{lee_li_yeh_ke_huang_wu_2016, 
  title={Metformin improve upper tract urothelial carcinoma survival in Taiwanese patients with type 2 diabetes}, 
  volume={27}, 
  DOI={10.1016/j.urols.2016.05.015}, 
  publisher={Medknow}, 
  author={Lee and Li and Yeh and Ke and Huang and Wu}, 
  year={2016}
  }