1. Gen-Probe Incorporated, 10210 Genetic Center Drive, San Diego, California 92121, United States
2. Marine Biology Research Division, Scripps Institution of Oceanography, University of California at San Diego, La Jolla, California 92093, United States
3. School of Chemistry, Cardiff University, Main Building, Park Place, Cardiff, Wales CF10 3AT, U.K.
4. Molecular Light Technology Research Limited (now Gen-Probe Cardiff Ltd.), 5 Chiltern Close, Cardiff Industrial Park, Cardiff, Wales CF14 5DL, U.K.