@article{2881,
  author = {Rebecca L. Morgan and Paul Whaley and Kristina A. Thayer and Holger J. Schünemann},
  title = {Identifying the PECO: A framework for formulating good questions to explore the association of environmental and other exposures with health outcomes},
  year = {2018},
  journal = {Environment International},
  volume = {121},
  pages = {1027-1031},
  month = {2018-12-01},
  issn = {0160-4120},
  url = {https://www.sciencedirect.com/science/article/pii/S0160412018302046},
  doi = {10.1016/j.envint.2018.07.015},
}