Clinical and molecular characterization of virus-positive and virus-negative Merkel cell carcinoma oleh Gabriel J. Starrett, Manisha Thakuria, Tianqi Chen, Christina Marcelus, Jingwei Cheng, Jason Nomburg, Aaron R. Thorner, Michael K. Slevin, Winslow Powers, Robert T. Burns, Caitlin Perry, Adriano Piris, Frank C. Kuo, Guilherme Rabinowits, Anita Giobbie-Hurder, Laura E. MacConaill, James A. DeCaprio