Two distinct subtypes of right temporal variant frontotemporal dementia K. A. Josephs, MST, MD, MS, J. L. Whitwell, PhD, D. S. Knopman, MD, B. F. Boeve, MD, P. Vemuri, PhD, M. L. Senjem, MS, J. E. Parisi, MD, R. J. Ivnik, PhD, D. W. Dickson, MD, R. C. Petersen, MD, PhD and C. R. Jack, Jr, MD From the Departments of Neurology (Division of Behavioral Neurology) (K.A.J., D.S.K., B.F.B., R.C.P.), Radi