1. Department of Paraclinical Sciences, Norwegian University of Life Sciences, Ås, Norway
2. Department, Biomedical Sciences, University, University of Zambia, Lusaka, Zambia
3. Department of Natural Sciences, Mbeya University of Science and Technology, Mbeya, Tanzania
4. Department of Basic Sciences and Aquatic Medicine, Section of Aquatic Medicine and Nutrition, Norwegian University of Life Sciences, Oslo, Norway