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Yeung, Charles Yat Cheong, Colman Patrick McGrath, Ricky Wing Kit Wong, Erik Urban Oskar Hägg, John Lo, och Yanqi Yang. "Frontal Facial Proportions of 12-year-old Southern Chinese: A Photogrammetric Study." Head Face Med 2015.

Yeung, Charles Yat Cheong, et al. "Frontal Facial Proportions of 12-year-old Southern Chinese: A Photogrammetric Study." Head Face Med 2015.