1. Waters Corporation, Floats Road, Wythenshawe, Manchester, U.K.
2. Waters Corporation, Atlas Park, Simonsway, Manchester, U.K.
3. Maximum Entropy Data Consultants, Kenmare, Ireland.
4. Institute of Biochemistry and Biophysics, Polish Academy of Sciences, Warsaw, Poland.
5. Departamento de Biología Funcional, Area de Microbiología, Facultad de Medicina, Universidad de Oviedo, Oviedo, Spain.
6. Department of Biochemistry and Molecular Biology, University of Southern Denmark, Odense, Denmark.
7. Centre for Epigenetics, Odense, Denmark.
8. Laboratoire d'Enzymologie et Biochimie Structurales, Gif-sur-Yvette, France.