The authors apologise for errors in the author affiliations in this paper. The correct affiliations are as follows:

NACEUR MEJRI¹, ANDREW HEMPHILL², BRUNO GOTTSTEIN²*

¹ Radiopharmaceutical Unit, National Center for Nuclear Sciences and Technology, 2020 Sidi Thabet, Tunisia

² Institute of Parasitology, University of Bern, Laenggass-Strasse 122, CH-3012 Bern, Switzerland

* Corresponding author: Bruno Gottstein, Institute of Parasitology, University of Bern, Laenggass-Strasse 122, CH-3001, Bern, Switzerland. Tel: +41 31 631 24 18. Fax: +41 31 631 24 77. E-mail: [email protected]).