1 Department of Molecular Parasitology, Humboldt University, Berlin, Germany; Muni University, Arua, Uganda.
2 Department of Biology, Bucknell University, Lewisburg, PA, USA.
3 Department of Molecular Parasitology, Humboldt University, Berlin, Germany.
4 Department of Molecular Parasitology, Humboldt University, Berlin, Germany; Department of Biological Sciences, Macquarie University, North Ryde, NSW, Australia. Electronic address: schaerju@hu-berlin.de.