Nainggolan, F. A.; Anna Tirawani Ambarita; Agustatius Sitepu; Keleng Ate Ginting; Layari Tarigan. Implementation of JKN Mobile Application-Based Health Services in Reducing Queues at the Karang Anyer Health Center Beringin District Deli Serdang Regency. JKG 2025, 7, 311-318.