Agreement of different methods for assessing sleep characteristics: a comparison of two actigraphs, wrist and hip placement, and self-report with polysomnography

Authors: Melanie Zinkhan, Klaus Berger, Sabrina Hense, Maren Nagel, Anne Obst, Beate Koch, Thomas Penzel, Ingo Fietze, Wolfgang Ahrens, Peter Young, Svenja Happe, Jan W. Kantelhardt, Alexander Kluttig, Andrea Schmidt‐Pokrzywniak, Frank Pillmann, Andreas Stang - Sleep Medicine 2014 cited by 239