[1] Univ Ghent, Lab Gen Biochem & Phys Pharm, Fac Pharmaceut Sci, B-9000 Ghent, Belgium
[2] MIT, Dept Mat Sci & Engn, Cambridge, MA 02139 USA
[3] MIT, Dept Biol Engn, Cambridge, MA 02139 USA
[4] MIT, Koch Inst Integrat Canc Res, Cambridge, MA 02139 USA
[5] Ragon Inst MGH MIT & Harvard, Boston, MA 02139 USA
[6] Howard Hughes Med Inst, Chevy Chase, MD USA
[7] ETH, Inst Pharmaceut Sci, CH-8093 Zurich, Switzerland