[1] Univ Wurzburg, Inst Pathol, D-8700 Wurzburg, Germany
[2] Hosp Clin Barcelona, Dept Pathol, Barcelona, Spain
[3] British Columbia Canc Agcy, Vancouver, BC V5Z 4E6, Canada
[4] Univ Nebraska Med Ctr, Dept Pathol & Microbiol, Omaha, NE USA
[5] Oregon Hlth & Sci Univ, SW Oncol Grp, Portland, OR 97201 USA
[6] Univ Arizona, Dept Pathol, Tucson, AZ USA
[7] Norwegian Radium Hosp, Oslo, Norway
[8] NCI, Pathol Lab, Bethesda, MD 20892 USA
[9] St Bartholomews Hosp, Canc Res UK, London, England
[10] NCI, Metab Branch, Bethesda, MD 20892 USA
[11] Robert Bosch Krankenhaus, Inst Clin Pathol, Stuttgart, Germany