Abell, JG; Shipley, MJ; Ferrie, JE; Kivimäki, M; Kumari, M; (2016) Recurrent short sleep, chronic insomnia symptoms and salivary cortisol: A 10-year follow-up in the Whitehall II study. Psychoneuroendocrinology , 68 pp. 91-99. 10.1016/j.psyneuen.2016.02.021. Green open access