[1] Childrens Hosp & Clin Minnesota, Minneapolis, MN USA
[2] Int Pleuropulm Blastoma Registry, Minneapolis, MN USA
[3] Childrens Natl Med Ctr, Washington, DC 20010 USA
[4] NCI, HGP, DCEG, NIH,DHHS, Rockville, MD USA
[5] Washington Univ, Med Ctr, St Louis, MO USA