1. Kassirer J, Wong J, Kopelman R. Learning Clinical Reasoning, 2nd Edition. Philadelphia: Lippincott, Williams and Wilkins. 2010
2. Peirce CS. ‘Pragmatism and Pragmaticism’ in Collected Papers of Charles Sanders Peirce, Vol. V, edited by Charles Hartshorne and Paul Weiss, 117. Cambridge, MA: Harvard University Press. 1934
3. Heckman J, Singer B. Abducting Economics. American Economic Review, 107(5): 298 -302. 2017
4. Doyle, AC. The Valley of Fear, New York: George H. Doran Co. 1914
5. Horwitz RI, Singer B, Viscoli C, Makuch R. Can treatment that is helpful on average be harmful to some patients? A study of the conflicting information needs of clinical inquiry and drug regulation. J. Clinical Epidemiology, 49(4): 395–400. 1996