Cheung CL, Chan BY, Chan V, Ikegawa S, Kou I, Ngai H, Smith D, Luk KD, Huang QY, Mori S, Sham PC, Kung AW (February 2009). "Pre-B-cell leukemia homeobox 1 (PBX1) shows functional and possible genetic association with bone mineral density variation". Hum. Mol. Genet. 18 (4): 679–87. doi:10.1093/hmg/ddn397. PMID19064610.