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Chen XK, Wen SW, Smith G, Yang Q, Walker M.Chen XK, et al. Among authors: smith g.BJOG. 2006 May;113(5):544-51. doi: 10.1111/j.1471-0528.2006.00898.x. Epub 2006 Mar 27.BJOG. 2006.PMID: 16579801
Ferguson SE, Smith GN, Walker MC.Ferguson SE, et al. Among authors: smith gn.Med Hypotheses. 2001 Jan;56(1):85-90. doi: 10.1054/mehy.2000.1116.Med Hypotheses. 2001.PMID: 11133260
Wen SW, Smith G, Yang Q, Walker M.Wen SW, et al. Among authors: smith g.Semin Fetal Neonatal Med. 2004 Dec;9(6):429-35. doi: 10.1016/j.siny.2004.04.002.Semin Fetal Neonatal Med. 2004.PMID: 15691780Review.