1. Department of Clinical Sciences Swedish University of Agricultural Sciences Post Office Box 7054 750 07 Uppsala Sweden
2. Department of Biomedical Sciences and Veterinary Public Health Swedish University of Agricultural Sciences Post Office Box 7036 750 07 Uppsala Sweden
3. School of Biological Sciences University of Queensland Brisbane QLD 4072 Australia
4. Environmental Engineering and Management Research Group Ton Duc Thang University Ho Chi Minh City 758307 Vietnam
5. Department of Aquaculture An Giang University Long Xuyen City An Giang Province Vietnam