/*
COPYRIGHT AND REQUEST FOR ACKNOWLEDGMENT OF USE:   
  Copyright (C) 1999-2013 University of Washington. From the National Simulation Resource,  
  Director J. B. Bassingthwaighte, Department of Bioengineering, University of Washington, Seattle WA 98195-5061. 
  Academic use is unrestricted. Software may be copied so long as this copyright notice is included.
  
  This software was developed with support from NIH grant HL073598. 
  Please cite this grant in any publication for which this software is used and send an email 
  with the citation and, if possible, a PDF file of the paper to: staff@physiome.org. 
*/