Many healtcare workers in the UK have already taken the pledge. The pledge states that...
"I, __________________, am committed to practicing medicine in the best interest of my patients and on the basis of the best available evidence, rather than on the basis of advertising or promotion. I therefore pledge to accept no money, gifts, or hospitality from the pharmaceutical industry; to seek unbiased sources of information and not rely on information disseminated by drug companies; and to avoid conflicts of interest in my practice, teaching, and/or research."
You can download the pledge (in PDF Format) and display it...