| Department of Molecular and Cellular Physiology and Howard Hughes Medical Institute, Stanford University Medical School, Stanford, CA 94305, USA. Electronic address: tcs1@stanford.edu. |
| Department of Molecular and Cellular Physiology, Stanford University School of Medicine, 265 Campus Drive, Stanford, CA, 94305, USA. |
| Department of Molecular and Cellular Physiology, Stanford University School of Medicine, Stanford, California, USA. |
| Howard Hughes Medical Institute, Stanford University School of Medicine, 265 Campus Drive, Stanford, CA, 94305, USA. |