LUCIA SHINTA RATNANINGTYAS; PROF.DR. TRI MURTI ANDAYANI, SP.FRS; DR. APT. DWI ENDARTI, S.F., M.SC. COST EFFECTIVENESS ANALYSIS OF LETROZOLE VERSUS TAMOXIFEN IN EARLY-STAGE BREAST CANCER FOR POSTMENOPAUSAL WOMEN: SYSTEMATIC REVIEW. Journal of Health Economic and Policy Research (JHEPR), [S. l.], v. 4, n. 1, 2026. DOI: 10.30595/jhepr.v4i1.301. Disponível em: https://ejournal.ump.ac.id/jhepr/article/view/301. Acesso em: 4 apr. 2026.