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, Gomez Fernandez, L, Walsby-Tickle, J, Deats, M, Mosca, S, Lin, Q, Banerjee, S, Chunekar, S, Patil, K, Gairola, S, Dunachie, S, Merchant, H, Stokes, R, Kuwana, R, Maes, A, Charrier, J-P, Probert, F, Caillet, C, Matousek, P, McCullagh, J, Newton, P, Zitzmann, N, Gangadharan, B