Erratum to “Coherent states of a particle in a magnetic field and the Stieltjes moment problem” [Phys. Lett. A 373 (2009) 1916]

This erratum is about an assumption made in Section 5 of the Letter “Coherent states of a particle in a magnetic field and the Stieltjes moment problem” by the same authors. The assumption is wrong and, as a consequence, Proposition 4 in the quoted article is wrong.