@article{shao2015aggregator,
  title={Aggregator: a machine learning approach to identifying MEDLINE articles that derive from the same underlying clinical trial},
  author={Shao, Weixiang and Adams, Clive E and Cohen, Aaron M and Davis, John M and McDonagh, Marian S and Thakurta, Sujata and Philip, S Yu and Smalheiser, Neil R},
  journal={Methods},
  volume={74},
  pages={65--70},
  year={2015},
  publisher={Elsevier}
}