Molecular surveillance for malaria drug resistance in imported Plasmodium falciparum isolates: sentinel data from TropNetEurop od Stoeter, K, Dittrich, S, Alifrangis, M, Muehlberger, N, Jelinek, T, Grobusch, M, Weitzel, T, Zoller, T, Gascon, J, Schunk, M, Ehrhardt, S, Matteelli, A, Laferl, H, Cuadros, J, Bisoffi, Z, Gjorup, I, Beran, J, Hatz, C, da Cunha, S, McWhinney, P