Feasibility of Using Resting Heart Rate and Step Counts From Patient-Held Sensors During Clinical Assessment of Medical Emergencies (FUSE): Protocol for Prospective Observational Study in European Hospitals - Jack Barrington; Christian Subbe; John Kellett; Erika Frischknecht Christensen; Mikkel Brabrand; Prabath Nanayakkara; Jelmer Alsma (JMIR Research Protocols)