Objective sleep assessment in >80,000 UK mid-life adults: Associations with sociodemographic characteristics, physical activity and caffeine. by Gewei Zhu, Michael Catt, Sophie Cassidy, Mark Birch-Machin, Michael Trenell, Hugo Hiden, Simon Woodman, Kirstie N Anderson

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A Novel, Open Access Method to Assess Sleep Duration Using a Wrist-Worn Accelerometer. by Vincent T van Hees, Séverine Sabia, Kirstie N Anderson, Sarah J Denton, James Oliver, Michael Catt, Jessica G Abell, Mika Kivimäki, Michael I Trenell, Archana Singh-Manoux

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Environmental and lifestyle factors associated with perceived facial age in Chinese women. by Andrew E Mayes, Peter G Murray, David A Gunn, Cyrena C Tomlin, Sharon D Catt, Yi B Wen, Li P Zhou, Hong Q Wang, Michael Catt, Stewart P Granger

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Estimation of daily energy expenditure in pregnant and non-pregnant women using a wrist-worn tri-axial accelerometer. by Vincent T van Hees, Frida Renström, Antony Wright, Anna Gradmark, Michael Catt, Kong Y Chen, Marie Löf, Les Bluck, Jeremy Pomeroy, Nicholas J Wareham, Ulf Ekelund, Søren Brage, Paul W Franks

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Reactive oxygen species production and mitochondrial dysfunction in white blood cells are not valid biomarkers of ageing in the very old. by Laura Wiley, Deepthi Ashok, Carmen Martin-Ruiz, Duncan C S Talbot, Joanna Collerton, Andrew Kingston, Karen Davies, Patrick F Chinnery, Michael Catt, Carol Jagger, Thomas B L Kirkwood, Thomas von Zglinicki

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Why some women look young for their age. by David A Gunn, Helle Rexbye, Christopher E M Griffiths, Peter G Murray, Amelia Fereday, Sharon D Catt, Cyrena C Tomlin, Barbara H Strongitharm, Dave I Perrett, Michael Catt, Andrew E Mayes, Andrew G Messenger, Martin R Green, Frans van der Ouderaa, James W Vaupel, Kaare Christensen

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