Collins James J, Priplata Attila A, Gravelle Denise C, Niemi James, Harry Jason, Lipsitz Lewis A
Department of Biomedical Engineering, Boston University, 44 Cummington St., Boston, MA 02215, USA.
IEEE Eng Med Biol Mag. 2003 Mar-Apr;22(2):76-83. doi: 10.1109/memb.2003.1195700.