1. Division of Companion Animal Sciences; Institute of Comparative Medicine; University of Glasgow Veterinary School; Bearsden Glasgow G61 1QH
2. Department of Physics and Astronomy, Kelvin Building; University of Glasgow; Glasgow G12 8QQ
3. Scottish Universities Environmental Research Centre; Scottish Technology Park, East Kilbride Glasgow G75 0QF
4. Department of Electronics and Electrical Engineering; University of Glasgow; Glasgow G12 8LT