[Sigmoid foreign body treated with colonoscopy in two children].

@article{Qi2018SigmoidFB,
  title={[Sigmoid foreign body treated with colonoscopy in two children].},
  author={L L Qi and Yan Fang Liu and Xiaoqian Huang},
  journal={Zhonghua er ke za zhi = Chinese journal of pediatrics},
  year={2018},
  volume={56 7},
  pages={
          550-551
        }
}