共 74 条
[1]
Andrew MK., 2010, Brocklehurst's Textbook of Geriatric Medicine and Gerontology, P198, DOI DOI 10.1016/B978-1-4160-6231-8.10033-9
[2]
[Anonymous], 2017, WORLD POPULATION PRO, DOI DOI 10.1017/CBO9781107415324.004
[3]
[Anonymous], 2017, World Economic Outlook Database
[4]
[Anonymous], 2017, WORLD POP PROSP 2017
[5]
BENTLER PM, 1990, PSYCHOL BULL, V107, P238, DOI 10.1037/0033-2909.107.2.238