Affiliation: | 1. Center for Cardiovascular Biomaterials, Department of Biomedical Engineering, Wickenden Building, Case Western Reserve University, 1900 Euclid Ave., Cleveland OH 44106‐7207, USA, Fax: (+1)?216‐368‐4969;2. Department of Macromolecular Science and Engineering, Case Western Reserve University, 2100 Adelbert Road, Cleveland OH 44106‐7202, USA, Fax: (+1)?216‐368‐4202 |