Erythropoietin doubles the incidence of microvascular obstruction in primary PCI - a randomized controlled trial in acute MI using CMR primary endpoints af Puranik Raj, Taylor Andrew M, Muthurangu Vivek, Moon James C, Boston-Griffiths Edney, Babu Girish, Hasleton Jonathan M, Ludman Andrew J, Yellon Derek M, Hausenloy Derek J