Affiliation: | 1. Process and Product Development Department, Formulation and Analytical Resources, Amgen, Inc.,Thousand Oaks,California 91320;2. Department of Chemical and Biological Engineering, Center for Pharmaceutical Biotechnology, University of Colorado,Boulder,Colorado 80309;3. Department of Pharmaceutical Sciences, Center for Pharmaceutical Biotechnology, University of Colorado Health Sciences Center,Denver,Colorado 80262 |