TY - JOUR AU - James, Paul A. AU - Mainous, Arch G. L2 - http://journals.stfm.org/familymedicine/2020/september/mainous-2020-0342 L1 - http://journals.stfm.org/media/3311/mainous-2020-0342.pdf TI - The Challenge of External Validity: Why Specialties Interpret Evidence Differently ER -