George Klein1,2, Beppino C. Giovanella1,2, Axel Westman1,2, John S. Stehlin1,2, David Mumford1,2
1Cancer Research Laboratory, St. Joseph Hospital, and Department of Obstetrics and Gynecology, Baylor College of Medicine, Houston, Tex.
2Department of Tumor Biology, Karolinska Institutet, Stockholm