@Article{pearl:18-r474,
  author = 	 "Pearl, J.",
  title = 	 "Comments on `The Tale Wagged by the DAG'",
  journal = 	 "International Journal of Epidemiology",
  year = 	 2018,
  volume = 	 "47",
  issue =	 "3",
  pages =        "81-86"
}