Thank you to all who sent me suggestions and mammography guidelines. I didn't use them all, but I used a few of them in the story I published today, Science Won’t Settle The Mammogram Debate //The latest recommendations show that the fight isn’t about evidence, it’s about values. https://fivethirtyeight.com/features/science-wont-settle-the-mammogram-debate/ Here are some of the other guidelines I collected here: Australia: http://canceraustralia.gov.au/publications-and-resources/position-statements/early-detection-breast-cancer WHO: http://apps.who.int/iris/bitstream/10665/137339/1/9789241507936_eng.pdf?ua=1 TRIP database: https://www.tripdatabase.com/search?categoryid=16%2C18%2C10%2C9%2C4&criteria=breast%20cancer%20screening best, Christie Aschwanden