3052813 MPTH migraine phenotype posttraumatic headache 6 3052810 MPTH midparental target height 4 3052811 MPTH methylparathion 3 3052816 MPTH mechanical pain thresholds 1 3052812 MPTH mid-parental height 1 3052815 MPTH migraine phenotype 1 3052814 MPTH mixed phase twinned hierarchical 1