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[size=21.4500007629395px]Measuring Returns to Hospital Care: Evidence from Ambulance Referral Patterns[size=21.4500007629395px]Joseph J. DoyleJr., John A. Graves, Jonathan Gruber, and Samuel A. Kleiner[size=21.4500007629395px]Journal of Political Economy[size=21.4500007629395px]Vol. 123, No. 1 (February 2015), pp. 170-214[size=21.4500007629395px]Published by: The University of Chicago Press[size=21.4500007629395px]
[size=21.4500007629395px]http://www.jstor.org/discover/10.1086/677756?uid=4914608&uid=3737800&uid=5909608&uid=2&uid=3&uid=67&uid=42349&uid=62&sid=21105845288433