Expert witnesses: opinion and dogma are pitfalls in medical journalism as well as in reports. Issue 2 (21st January 2005) - Crawford, M; Davis, P; Herbison, J; Mok, J; Mott, A; Payne, H; Postlethwaite, R; Price, J; Samuels, M; Sibert, J; Sills, J; Speight, N