T. J Iwashyna, J. M Kahn, R. A Hayward and B. K. Nallamothu
Circulation: Cardiovascular Quality and Outcomes 3 ( 5 ): 468 - 475 , 2010
S. L Hummel, N. P Pauli, H. M Krumholz, Y Wang, J Chen, S. L. T Normand and B. K. Nallamothu
Circulation: Heart Failure 3 ( 2 ): 244 - 252 , 2010