However , Forssmann tricked her by restraining her to the operating table and pretending to locally anaesthetise and cut her arm whilst actually doing it on himself .
She agreed , but only on the promise that he would do it on her rather than on himself .
Forssmann tricked her by restraining her to the operating table and pretending to locally anaesthetise and cut her arm whilst actually doing it on himself .
She agreed , but only on the promise that he would do it on her rather than on himself .