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Scherjon SA, Oosting H, Smolders-DeHaas H, Zondervan HA, Kok JH.Scherjon SA, et al.Early Hum Dev. 1998 Aug 28;52(1):67-79. doi: 10.1016/s0378-3782(98)00004-8.Early Hum Dev. 1998.PMID: 9758249