  We present a scheme for symmetric multiparty quantum state sharing of an
arbitrary $m$-qubit state with $m$ Greenberger-Horne-Zeilinger states following
some ideas from the controlled teleportation [Phys. Rev. A \textbf{72}, 02338
(2005)]. The sender Alice performs $m$ Bell-state measurements on her $2m$
particles and the controllers need only to take some single-photon product
measurements on their photons independently, not Bell-state measurements, which
makes this scheme more convenient than the latter. Also it does not require the
parties to perform a controlled-NOT gate on the photons for reconstructing the
unknown $m$-qubit state and it is an optimal one as its efficiency for qubits
approaches the maximal value.
