Anemia as a potent marker of in-hospital mortality in patients admitted to the cardiac intensive care unit: Data from the Critical Care Cardiology Trials Network (CCCTN) Registry by Christine Chow, Rasheed Durowoju, Carlos Alviar, Gregory W Barsness, Howard A Cooper, Lori B Daniels, Xuan Ding, Shahab Ghafghazi, Umesh Gidwani, Michael Goldfarb, Dustin Hillerson, Jason N Katz, Paul Marano, Jeong-Gun Park, Matthew Pierce, Scott W Rose, Robert O Roswell, Sean van Diepen, Anjali Wagle, Erin A Bohula, David D Berg, David A Morrow, Younghoon Kwon