Simultaneous Analysis of Biomarkers in Human Hair for Evaluating Chronic Tobacco Smoke Exposure and Stress/Relaxation Using Online In-Tube Solid-Phase Microextraction Coupled with Liquid Chromatography-Tandem Mass Spectrometry. - Kataoka H; Tsuzaki A; Kitagawa S; Ehara K (Molecules (Basel, Switzerland), 2026)