[1] MD Anderson Canc Ctr, Houston, TX USA
[2] Amer Coll Radiol, Philadelphia, PA USA
[3] Univ Montreal, Ctr Hosp, Montreal, PQ, Canada
[4] Wayne State Univ, Sch Med, Detroit, MI USA
[5] Thomas Jefferson Univ, Philadelphia, PA USA
[6] Univ Chicago, Chicago, IL USA
[7] Univ Louisville, Louisville, KY USA