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POMS scores after inhaling fir essential oil and room air. T–A: tension–anxiety; D: depression; A–H: anger–hostility; F: fatigue; C: confusion; V: vigor; TMD: Total Mood Disturbance N = 26, mean ± standard deviation, ** p < 0.01, * p < 0.05 by Wilcoxon singed-rank test (one-sided).
