Computational Sciences Center of Emphasis, Pfizer Worldwide Research & Development, Cambridge, MA, USA.|Computational Sciences Center of Emphasis, Pfizer Worldwide Research & Development, Cambridge, MA, USA.|Computational Sciences Center of Emphasis, Pfizer Worldwide Research & Development, Cambridge, MA, USA.|Computational Sciences Center of Emphasis, Pfizer Worldwide Research & Development, Cambridge, MA, USA.|Computational Sciences Center of Emphasis, Pfizer Worldwide Research & Development, Cambridge, MA, USA.