1. Department of Physiotherapy, School of Health Sciences; University of Applied Sciences of Western Switzerland; Lausanne; Switzerland
2. Department of Geriatric Medicine and Geriatric Rehabilitation, Centre Hospitalier Universitaire Vaudois; University of Lausanne; Lausanne; Switzerland
3. Department of Orthopaedic Surgery and Traumatology, Centre Hospitalier Universitaire Vaudois; University of Lausanne; Lausanne; Switzerland