Professor Allain disagreed with Dr Harrison's analysis of the ethical position in respect of her refusal to participate in his proposed study to test for anti-HCV in samples from blood transfusion recipients. Professor Allain asked if Dr Harrison's ethical reasoning was true, why did she then not start screening all her donors now? He stated that if she did not, she was just as much open to litigation until 1 September 1991, whether she entered the study or not.