Do thePc+pentaquarks have strange siblings?

The recent LHCb discovery of states ${P}_{c}^{+}(4380)$, ${P}_{c}^{+}(4450)$, believed to be $c\overline{c}uud$ pentaquark resonances, begs the question of whether equivalent states with $c\overline{c}\ensuremath{\rightarrow}s\overline{s}$ exist, and how they might be produced. The precise analogue to the ${P}_{c}^{+}$ discovery channel ${\mathrm{\ensuremath{\Lambda}}}_{b}\ensuremath{\rightarrow}J/\ensuremath{\psi}{K}^{\ensuremath{-}}p$, namely, ${\mathrm{\ensuremath{\Lambda}}}_{c}\ensuremath{\r