The end of life in the elderly.
D000368:Aged; D000375:Aging; D001293:Attitude to Death; D003643:Death; D004702:Endocrine Glands / Q000502:physiology; D005065:Euthanasia; D005260:Female; D006801:Humans; D008297:Male; D012737:Sex Factors; D012924:Social Conditions; D013405:Suicide; D014481:United States