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Liang, Rui-Zhen, Jin-Tao Wu, You-Nong Wu, Roger J. Smales, Ming Hu, Jin-Hua Yu, and Guang-Dong Zhang. Bilateral Maxillary Fused Second and Third Molars: A Rare Occurrence. Nature Publishing Group, 2012.

Liang, Rui-Zhen, et al. Bilateral Maxillary Fused Second and Third Molars: A Rare Occurrence. Nature Publishing Group, 2012.