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We report on some ideas concerning the nature of the X(3872) resonance andthe need for approximately equal charged and neutral components of $D \bar{D}^*+cc$. Then we discuss how some hidden charm states are obtained from theinteraction between vector mesons with charm and can be associated to some ofthe charmonium-like X,Y,Z states. Finally we discuss how the nature of thesestates could be investigated through different types of radiative decay.

The X(3872) and other X,Y,Z Resonances as Hidden Charm Meson-Meson Molecules