Citation:
M. Barnett, N.A. Christakis, A.J. O’Malley, J.P. Onnela, N.L. Keating, and B. Landon, "Physician Patient-Sharing Networks and the Cost and Intensity of Care in US Hospitals" Medical Care, 50(2): 152-160 (February 2012); http://dx.doi.org/10.1097/MLR.0b013e31822dcef7