Gunardi, Eka R., and Arresta Suastika. “Patterns of Outpatient Referral Cases before and After Implementation of National Health Coverage Program: Pola Kasus Rujukan Rawat Jalan Sebelum Dan Sesudah Pelaksanaan Program Jaminan Kesehatan Nasional”. Indonesian Journal of Obstetrics and Gynecology, vol. 8, no. 3, July 2020, pp. 161-7, doi:10.32771/inajog.v8i3.1254.