Trading places.
D000223:Adaptation, Psychological; D000368:Aged; D017028:Caregivers / Q000523:psychology* / Q000706:statistics & numerical data; D017281:Cost of Illness; D005190:Family / Q000523:psychology*; D016330:Frail Elderly; D006801:Humans; D009726:Nurses / Q000523:psychology* / Q000706:statistics & numerical data; D011157:Population Dynamics; D012944:Social Support; D014195:Travel; D016526:Workload