Assessing cortisol from hair samples in a large observational cohort: The Whitehall II study.

"Disclosure statement The authors have nothing to disclose."

"This work was performed at Department of Epidemiology and Public Health, University College London Medical School. The Whitehall II study has been supported by grants from the Medical Research Council (K013351); British Heart Foundation; National Heart Lung and Blood Institute (R01HL36310), US, NIH: National Institute on Aging (R01AG13196 and R01AG34454), US, NIH; Agency for Health Care Policy Research (HS06516); and the Dunhill Medical Trust (R247/0512), UK. We thank all participating men and women in the Whitehall II Study, as well as all Whitehall II research scientists, study and data managers and clinical and administrative staff who make the study possible. MKi is supported by the Medical Research Council (K013351), Academy of Finland and an ESRC professorship. MJS is partly supported by the British Heart Foundation. MKu is partly supported by the Economic and Social Research Council (RES-596-28-0001). The Whitehall II study has been supported by grants from the Medical Research Council (K013351); British Heart Foundation; National Heart Lung and Blood Institute (R01HL36310), US, NIH: National Institute on Aging (R01AG13196 and R01AG34454), US, NIH; Agency for Health Care Policy Research (HS06516); and the Dunhill Medical Trust (R247/0512), UK. The collection of the hair samples was also funded by the Dunhill Medical Trust (R247/0512). MKi is supported by the Medical Research Council (K013351), Academy of Finland and an ESRC professorship. MJS is partly supported by the British Heart Foundation. MKu is partly supported by the Economic and Social Research Council (RES-596-28-0001)."