1. Okanagan Polymer Engineering Research & Applications Laboratory, School of Engineering, University of British Columbia, Kelowna, British Columbia V1V 1 V7, Canada
2. Centre for Blood Research, Life Science Institute and Department of Pathology & Laboratory Medicine, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
3. Department of Chemistry, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada
4. The School of Biomedical Engineering, University of British Columbia, Vancouver, British Columbia V6T 1Z3, Canada