Wolrd Health Organization (WHO). (2013). Implementation tools: Package of essentail noncommunicable (PEN) disease interventions for primary health care in low-resource settings. World Health Organization (WHO).

Wolrd Health Organization (WHO). Implementation Tools: Package of Essentail Noncommunicable (PEN) Disease Interventions for Primary Health Care in Low-resource Settings. Geneva, Switzerland: World Health Organization (WHO), 2013.

Wolrd Health Organization (WHO). Implementation Tools: Package of Essentail Noncommunicable (PEN) Disease Interventions for Primary Health Care in Low-resource Settings. World Health Organization (WHO), 2013.