title: Comment on "mean first passage time for anomalous diffusion".
abstract: We correct a previously erroneous calculation [Phys. Rev. E 62, 6065 (2000)] of the mean first passage time of a subdiffusive process to reach either end of a finite interval in one dimension. The mean first passage time is in fact infinite.
authors.affiliation: Departamento de Física, Universidad de Extremadura, E-06071, Badajoz, Spain.
authors.forename: S B
authors.initials: SB
authors.lastname: Yuste
authors.forename: Katja
authors.initials: K
authors.lastname: Lindenberg