@article{wang_lee_yeung_chan_jiang_2009, 
  title={Gastrointestinal Polyps in Children}, 
  volume={50}, 
  DOI={10.1016/s1875-9572(09)60063-2}, 
  publisher={Elsevier BV}, 
  author={Wang and Lee and Yeung and Chan and Jiang}, 
  year={2009}
  }