Affiliation: | aCharité-Universitätsmedizin Berlin, Centre for Humanities and Health Sciences, Department of the Education for Nurse and Paramedical Teachers and Nursing Science, Augustenburger Platz 1, 13353 Berlin, Germany;bAin Shams University Hospital, Department of Geriatric Medicine, P.O. Box 9560, Nasr City, Cairo 11471, Egypt;cAin Shams University Hospital, Department of Geriatric Medicine, P.O. Box 72, Helmiyet El-Zeytoun Distribution, Cairo 11321, Egypt |