Antibiotics 1 Barriers to use mental health services 1 Challenging behaviour 1 Cost-of-illness 1 Costs and cost analysis 1 DISMOD II 1 Disability adjusted life years 1 Distress and agitation 1 Drug resistance in microorganisms 1 Health Studies 1 Health services research 1 Health services utilisation 1 Health workers with mobile phones in Western Highlands Province, PNG 1 History 1 Hospitals 1 Incidence 1 Inpatient mental health units 1 Maternal health services 1 Mental health Compulsory Treatment 1 Mental health services 1 Mixed-method design 1 Mobile communication and health service delivery in PNG 1 Mobile phones in the Papua New Guinea health sector 1 Organisational case studies 1 Pacific mental health 1 Prevalence 1 Programme design 1 Programme evaluation 1 Programme implementation 1 Resource use 1