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. 2020 Feb 4;8:12. doi: 10.1186/s40359-019-0364-2

Fig. 1.

Fig. 1

Proposed model of associations between urbanicity, HPA axis functioning and behavioral and emotional problems. Note. HPA = hypothalamic-pituiatry-adrenal; AUCi = area under the curve with respect to increase; RQ = research question; AUCg = area under the curve with respect to ground; CAR = cortisol awakening response