Identifying falsified COVID-19 vaccines by analysing vaccine vial label and excipient profiles using MALDI-ToF mass spectrometry by Arman, BY, Clarke, R, Bharucha, T, Fernandez, LG, Walsby-Tickle, J, Deats, M, Mosca, S, Lin, Q, Banerjee, S, Chunekar, SR, Patil, KD, Gairola, S, Dunachie, S, Merchant, HA, Stokes, R, Kuwana, R, Maes, A, Charrier, J, Probert, F, Caillet, C, Matousek, P, McCullagh, J, Newton, PN, Zitzmann, N, Gangadharan, B