Occupational Sitting Time, Job Productivity and Related Work Loss in Spanish University Employees. - Puig-Ribera, Anna M.; Martínez-Lemos, Iván; Giné-Garriga, Maria; Fortuño, Jesús; González-Suarez, Ángel Manuel; Bort-Roig, Judit; Gilson, Nick (Medicine & Science in Sports & Exercise, 2011)