Pemanfaatan pelayanan kesehatan oleh peserta Jaminan Kesehatan Nasional (JKN) di Puskesmas Cijeruk, Kabupaten Bogor Bulan Januari-Mei 2014 = Utilization of health services by The Nasional Health Insurance (JKN) Participants at Puskesmas Cijeruk in Bogor District January-May 2014