1. Microsaic Systems plc; Unit 2, GMS House, Boundary Rd, Woking; Surrey; GU21 5BX; UK
2. Department of Electrical and Electronic Engineering; Imperial College; Exhibition Rd; London; SW7 2AZ; UK
3. Merck Sharpe & Dohme; Hertford Road; Hoddesdon; EN11 9BU; UK
4. Merck Research Laboratories; 126 East Lincoln Avenue; Rahway; NJ; USA