Key points are not available for this paper at this time.
aDepartment of Surgery (Platell, Hall), The University of Western Australia, Perth, Australia bDepartment of Pathology (Papadimitriou), The University of Western Australia, Perth, Australia fracs *Correspondence address: Professor John C Hall, University Department of Surgery, Royal Perth Hospital, Perth WA 6000, Australia Received December 2, 1999; Revised April 13, 2000; Accepted August 1, 2000. No competing interests declared.
Platell et al. (Fri,) studied this question.