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3. Global age-friendly cities: A guide. Geneva, Switzerland: World Health Organization; 2007. ISBN 9789241547307. [Consultado el 1 de septiembre de 2020]. Disponible en: https://apps.who.int/iris/bitstream/handle/10665/43755/9789241547307_eng.pdf;jsessionid=31A0C18DA9C324254C2B6A2061332649?sequence=1
4. The Global Network for Age-friendly Cities and Communities: looking back over the last decade,looking forward to the next. Geneva, Switzerland: World Health Organization; 2018 (WHO/FWC/ALC/18.4). Licence: CC BY-NC-SA 3.0 IGO. [Consultado el 1 de septiembre de 2020]. Disponible en: https://apps.who.int/iris/bitstream/handle/10665/278979/WHO-FWC-ALC-18.4-eng.pdf
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