1. Institute of Parasitology; Biology Centre, Czech Academy of Sciences; České Budějovice (Budweis) Czech Republic
2. Faculty of Science; University of South Bohemia; České Budějovice (Budweis) Czech Republic
3. Sir William Dunn School of Pathology; University of Oxford; Oxford UK
4. Department of Biochemistry and Molecular Biology; Dalhousie University; Halifax Canada