Institution: | (1) Howard Hughes Medical Institute, Beckman Center, Stanford University Medical Center, 94305-5428 Stanford, California, USA;(2) Department of Genetics, Stanford University Medical Center, 94305-5428 Stanford, California, USA;(3) Department of Pediatrics, Stanford University Medical Center, 94305-5428 Stanford, California, USA;(4) Department of Pathology, University of Michigan, 48109-0650 Ann Arbor, Michigan, USA |