1. DSM Nutritional Products Ltd.; Wurmisweg 571 4303 Kaiseraugst Switzerland
2. Phylogene S.A.; 62, Route Nationale 113, 30620 Bernis France
3. Photobiology Laboratory; Sefako Makgatho Health Sciences University; Molotlegi St, Medunsa 0204 Pretoria South Africa
4. AVR Consulting Ltd.; 26 Shavington Way Northwich Cheshire CW9 8FH, UK