Aged Humans 9 Male 9 aged 9 human 9 male 9 Female 8 Middle Aged 8 etiology 8 female 8 middle aged 8 Article 6 adult 6 Adult 5 controlled study 5 major clinical study 5 depression 4 Adaptation, Psychological 3 Surveys and Questionnaires 3 adverse event 3 anxiety 3 comorbidity 3 complication 3 coping behavior 3 cross-sectional study 3 epidemiology 3 procedures 3 psychology 3 questionnaire 3 retrospective study 3