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KOMBINASI METODE BACKWARD CHAINING DAN CERTAINTY FACTOR MENDIAGNOSA PENYAKIT GANGGUAN ANSIETAS. JSSR [Internet]. 2023 Oct. 13 [cited 2026 May 3];6(3):657-62. Available from: https://jurnal.goretanpena.com/index.php/JSSR/article/view/1469