1. Charles Institute of Dermatology School of Medicine University College Dublin Dublin 4 Ireland
2. Ashland Specialties Ireland Ltd. National Science Park Building V, Dublin Road, Petitswood, Mullingar Co. Westmeath N91 F6PD Ireland
3. Pharmaceutical R&D Ashland Specialty Ingredients G.P. 500 Hercules Road, 8136A/260 Wilmington DE 19808 USA