1. Department
of Pharmaceutical Technology and Biopharmacy, University of Groningen, Antonius Deusinglaan 1, 9713 AV Groningen, The Netherlands
2. Janssen Vaccines and Prevention, Archimedesweg 4, 2333 CN Leiden, The Netherlands
3. Department
of Chemical Engineering and Biotechnology, University of Cambridge, Philippa Fawcett Drive, Cambridge CB3 0AS, United Kingdom
4. F. Hoffmann-La Roche A.G., Basel 4070, Switzerland
5. Process Technology, Corbion Purac, P.O. Box
21, 4200 AA Gorinchem, The Netherlands