Professor Juergen Siepmann is Professor of Pharmaceutics at the College of Pharmacy, Université Lille Nord de France, Lille, France. He studied pharmacy and received his doctoral degree from the Freie Universitaet Berlin, Berlin, Germany, in 1999. His research focuses on the elucidation of the underlying mass transport phenomena in controlled drug delivery systems. Prof. Siepmann is reviews editor of the International Journal of Pharmaceutics and president of APGI (French Association of Pharmaceutical Technology). Since 2010 he is heading the INSERM (French National Institute of Health and Medical Research) research group “Controlled Drug Delivery Systems and Biomaterials”.     Ronald A. Siegel, Sc.D., is Professor of Pharmaceutics and Biomedical Engineering at the University of Minnesota.  He received his doctoral degree from MIT under the direction of Prof. Robert Langer in 1984, and taught at the University of California, San Francisco until 1998, when he moved to Minnesota.  Professor Siegel is Fellow of the Controlled Release Society (CRS), the American Association of Pharmaceutical Scientists, and the American Institute of Medical and Biological Engineering.  He was president of CRS from 1997-1998.  His present research interests include hydrogels, block polymers, microfabricated sensors and drug delivery systems, and mathematical modeling of transport.     Michael J. Rathbone is Associate Professor of Pharmaceutics at the School of Pharmacy, Griffith University, Australia.  Dr. Rathbone’s research interests are in the modified delivery of bioactives to the mouth, polymeric delivery systems and long acting veterinary drug delivery systems.  He is a Fellow of the Controlled Release Society (CRS) and received the CRS Distinguished Service Award in 2006.  He has edited or co-edited many books in the fields of modified release drug delivery, oral mucosal drug delivery andveterinary drug delivery.