From the St Michael's Hospital; Toronto Sunnybrook Regional Cancer Centre, Toronto; Hotel Dieu Health Sciences Hospital, St Catharines; Juravinski Cancer Centre, Hamilton; National Cancer Institute of Canada Clinical Trials Group, Kingston, Ontario; British Columbia Cancer Agency, Vancouver Cancer Clinic, Vancouver, British Columbia, Canada; Mayo Clinic, Jacksonville, FL; Mayo Clinic, Rochester, MN; Cancer Institute Medical Group, Santa Monica, CA; and Massachusetts General Hospital, Boston, MA (2006-08-01時点)