Reference ranges for cardiac structure and function in cardiovascular magnetic resonance (CMR) imaging in Caucasians from the UK Biobank population cohort by Petersen, S, Aung, N, Sanghvi, M, Zemrak, F, Fung, K, Miguel Paiva, J, Francis, J, Khanji, M, Lukaschuk, E, Lee, A, Carapella, V, Jin Kim, Y, Leeson, C, Piechnik, S, Neubauer, S