Assessing the kinetics of oxygen-unloading from red cells using FlowScore, a flow-cytometric proxy of the functional quality of blood by Rabcuka, J, Smethurst, P, Dammert, K, Saker, J, Aran, G, Walsh, G, Tan, J, Codinach, M, McTaggart, K, Marks, D, Bakker, S, McMahon, A, Di Angelantonio, E, Roberts, D, Blonski, S, Korczyk, P, Shirakami, A, Cardigan, R, Swietach, P