[1] Skin Canc Surg Ctr, Bethesda, MD USA
[2] NCI, Bethesda, MD USA
[3] New York State Canc Registry, Albany, NY USA
[4] Louisiana State Univ, Hlth Sci Ctr, New Orleans, LA USA
[5] New Jersey Dept Hlth, Trenton, NJ USA
[6] Univ Iowa, Iowa City, IA USA