1. 1Stanford Program in Epithelial Biology, Stanford University, Stanford, California.
2. 2Department of Microbiology, Tumor and Cell Biology, Science for Life Laboratory, Karolinska Institute, Stockholm, Sweden.
3. 3Molecular and Cellular Biology, Baylor College of Medicine, Houston, Texas.
4. 4Departments of Anatomic Pathology & Tumor Biology, H. Lee Moffitt Cancer Center & Research Institute; Tampa, Florida.
5. 5Veterans Affairs Palo Alto Healthcare System, Palo Alto, California.