The Effect of a Smartphone App with an Accelerometer on the Physical Activity Behavior of Hospitalized Patients: A Randomized Controlled Trial. - Hanneke C. van Dijk-Huisman; Rachel Senden; Maud H. H. Smeets; Rik G. J. Marcellis; Fabienne J. H. Magdelijns; Antoine F. Lenssen (Sensors, 2023)