The challenge of research.
D000368:Aged / Q000523:psychology*; D000818:Animals; D003221:Confusion / Q000628:therapy; D004285:Dogs; D005260:Female; D005851:Geriatric Nursing; D001841:Human-Animal Bond; D006801:Humans; D008134:Long-Term Care; D008297:Male; D009769:Object Attachment; D012106:Research; D012109:Research Support as Topic