122 citations
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October 2010 in “Clinica Chimica Acta” 217 citations
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July 2009 in “Experimental and Clinical Endocrinology & Diabetes”
501 citations
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October 2008 in “Psychoneuroendocrinology” Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.
567 citations
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October 2007 in “Clinical and investigative medicine” 25 citations
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February 2007 in “Forensic science international” Different hair cleaning methods caused varying levels of damage to the hair's outer layer.