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Hartley LM, Ng SY, Dale RC, Church AJ, Martinez A, de Sousa C.Hartley LM, et al. Among authors: dale rc.Dev Med Child Neurol. 2002 Apr;44(4):273-7. doi: 10.1017/s0012162201002055.Dev Med Child Neurol. 2002.PMID: 11995896Free article.