1. Instituto
de Tecnologia Química e Biológica, Universidade Nova de Lisboa, Av. da República, 2780-157 Oeiras,
Portugal
2. European Molecular
Biology Laboratory, Hamburg Outstation, c/o DESY, Building 25a, Notkestraße 85, 22603 Hamburg, Germany
3. Department of Chemistry, University of Manchester, Manchester M13 9PL, United
Kingdom
4. WestCHEM, Department of Pure & Applied Chemistry, University of Strathclyde, Glasgow G1 1XL, United Kingdom