1. Department of Chemical Sciences; University of Naples Federico II; via Cinthia 4 80126 Naples Italy
2. Research Center Borstel Leibniz Lung Center; Parkallee 4a 23845 Borstel Germany
3. Laboratoire de Biotechnologie et de Chimie Marines; Université de Bretagne-Sud; Rue André Lwoff 56000 Vannes France