aged aging alter aufsatzsammlung behandeling cas casereports casestudies continentalpopulationgroups diagnose diseases dutchliterature etc ethnicgroups etnischeminderheden fitness geriatricpsychiatry geriatrics gezondheid gériatrie health healthandhygiene healthstatus healthyliving holism huisartsgeneeskunde laws legalstatus maladies medical mentaldisorders mentalhealth minorityolderpeople olderpeople pathologicalpsychology personnesâgéesissuesdesminorités preventivemedicine primaryhealthcare psychischestoornissen psychogeriatrie psychology psychopathologie reference regelgeving santéethygiène socioeconomicfactors studyaids unitedstates wt100p9522007 étudesde