Lack of selection of antimalarial drug resistance markers after intermittent preventive treatment of schoolchildren (IPTsc) against malaria in northeastern Tanzania oleh Frederik Von Wowern, Geofrey Makenga, Sarah Wellmann Thomsen, Louise Wellmann Thomsen, Emma Filtenborg Hocke, Vito Baraka, Benjamin H. Opot, Daniel T.R. Minja, John P.A. Lusingu, Jean-Pierre Van-geertruyden, Helle Hansson, Michael Alifrangis