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Salivary reactivity cortisol predicted by neonatal pain and BDNF Val66Met polymorphism in very preterm boys.
GZLM results of 45 boys (29 Val/Val; 16 Val/Met or Met/Met) were shown in the figure.
Solid lines represented children with Val/Met or Met/Met genotypes; dashed lines represented children with Val/Val genotype.
