RT Journal Article SR Electronic T1 Pain, vivisection, and the value of life JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 202 OP 204 DO 10.1136/jme.2004.008367 VO 31 IS 4 A1 Frey, R G YR 2005 UL http://jme.bmj.com/content/31/4/202.abstract AB