RT Journal Article SR Electronic T1 Lives in the balance: the ethics of using animals in biomedical research JF Journal of Medical Ethics JO J Med Ethics FD BMJ Publishing Group Ltd and Institute of Medical Ethics SP 58 OP 59 DO 10.1136/jme.20.1.58-a VO 20 IS 1 A1 Peter Sedgwick YR 1994 UL http://jme.bmj.com/content/20/1/58.2.abstract AB