CHERNG-TAY HSUEH2018-09-102018-09-102009http://www.scopus.com/inward/record.url?eid=2-s2.0-68149142353&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/351650Population changes and aging trend in Taiwanjournal article10.1007/s00508-009-1195-6