In these models, 1-3 months ART refills are distributed to stable clients outside of the health facility environment. ART refills are provided to clients either directly at their home by community health workers or collected by the client from a community pharmacy or at specific community locations operated either by community health workers or through a mobile outreach service operated from the facility or sub-district health service. ART refills are usually separated from clinical follow up, which takes place 1-2 times annually at the facility.