Pontificia Universidad Católica del Perú2013-10-292013-10-292008http://repositorio.pucp.edu.pe/index//handle/123456789/21189No presenta resumenapplication/pdfspaAttribution 4.0 Internationalinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/Adulto mayorinfo:eu-repo/semantics/article