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\bibitem{Soriano_etal2011} Soriano, A., Gonzalez, A., Orero, A., Moliner, L., Carles, M., Sanchez, F., et al. (2011). Attenuation correction without transmission scan for the MAMMI breast PET. \textit{Nucl. Instrum. Methods Phys. Res. A}, \textit{648}, S75--S78.

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