Horizons is a supplement to Biomedical Instrumentation & Technology (ISSN 0899-8205) and is published twice a year by the Association for the Advancement of Medical Instrumentation (AAMI), 4301 N. Fairfax Drive, Suite 301, Arlington, VA 22203-1633; +1-703-525-4890. © 2012, Association for the Advancement of Medical Instrumentation. Publishing services provided by Allen Press Publishing Services...