Essential noncommunicable (PEN) disease interventions Published: 4 August 2021 https://www.who.int/publications/i/item/who-package-of-essential-noncommunicable-(pen)-disease-interventions-for-primary-health-care Android: https://play.google.com/store/apps/details?id=org.who.WHOPEN iOS: https://apps.apple.com/us/app/whopen/id1566338877
