Strontium isoscape of sub-Saharan Africa allows tracing origins of victims of the transatlantic slave trade by Wang, X, Bocksberger, G, Arandjelovic, M, Agbor, A, Angedakin, S, Aubert, F, Ayimisin, EA, Bailey, E, Barubiyo, D, Bessone, M, Bobe, R, Bonnet, M, Boucher, R, Brazzola, G, Brewer, S, Lee, KC, Carvalho, S, Chancellor, R, Cipoletta, C, Cohen, H, Copeland, SR, Corogenes, K, Costa, AM, Coupland, C, Neil, E